Return to Word Parts Page »

Medical Word Parts For: h

Word PartDefinitionCategory
Hhydrogen general
H+hydrogen ion general
h/ohistory of
habitA recurrent, often unconscious pattern of behavior that is regularly manifested. General
hairA threadlike specialized epidermal structure developing from a papilla sunk in the dermis.Integumentary
hair follicleA tube-like invagination of the epidermis from which the hair shaft develops and into which the sebaceous glands open. The hair follicle is lined by a cellular inner and outer root sheath of epidermal origin and is invested with a fibrous sheath derived from the dermis.Integumentary
halit/obreathrespiratory
halitosisA foul breath odor resulting from poor oral hygiene, dental or oral infections, or the ingestion of certain foods. Integumentary
hallucinationSensing things while awake that appear to be real, but instead have been created by the mind, common in delirium.nervous
hallux valgusA bunion. A deformity of the joint connecting the big toe to the foot.skeletal
handThe distal part of the arm beyond the wrist consisting of the carpus, metacarpus, and fingers.Skeletal
hapl/osimple, singlegeneral
HAVhepatitis A virus digestive
HBPhigh blood pressurecardiovascular
HBVhepatitis B virus digestive
HCGhuman chorionic gonadotropin endocrine
HCPhealth care professional
HCT,hematocrit cardiovascular
HCVhepatitis C virus digestive
HDhearing distance Eyes And Ears
HDLhigh-density lipoprotein cardiovascular
HDVhepatitis D digestive
headThe upper part of the body containing the brain, mouth, and sense organs. Skeletal
headachePain in the cranial region.Nervous
hearingThe ability to perceive sounds.Eyes And Ears
heartThe hollow, muscular organ that maintains the circulation of the blood. Cardiovascular
heart arrestCessation of heart beat.Cardiovascular
heart blockImpaired conduction of cardiac impulse that can occur anywhere along the conduction pathway, such as between the sinoatrial node and the right atrium (SA block) or between atria and ventricles (AV block).Cardiovascular
heart failureA heterogeneous condition in which the heart is unable to pump sufficient blood to meet the metabolic need of the body. Cardiovascular
heart murmursHeart sounds caused by vibrations resulting from the flow of blood through the heart.Cardiovascular
heart septumThis structure includes the thin muscular atrial septum between the two heart atria, and the thick muscular ventricular septum between the two heart ventricles. Cardiovascular
heart soundsThe sounds heard over the cardiac region produced by the functioning of the heart.Cardiovascular
heart valvesFlaps of tissue that prevent regurgitation of blood from the ventricles to the atria or from the pulmonary arteries or aorta to the ventricles. Cardiovascular
heartburnSubsternal pain or burning sensation, usually associated with regurgitation of gastric juice into the esophagus. Digestive
heat exhaustionA clinical syndrome caused by heat stress, such as over-exertion in a hot environment or excessive exposure to sun. General
heat strokeA condition caused by the failure of body to dissipate heat in an excessively hot environment or during physical exertion in a hot environment. The body temperature is dangerously high with red, hot skin accompanied by delusions; convulsions; or coma. It can be a life-threatening emergency and is most common in infants and the elderly. Also called sunstroke.General
hect-one hundredgeneral
hedon/opleasurenervous
heel spurA bony outgrowth on the lower surface of the heel bone.muscular
helc/oulcerdigestive
heli/osunnervous
hem/obloodcardiovascular
hemangiomaA birthmark that commonly appears as a bright red nodule of blood vessels in the skin. Grows during the first year of life and then recedes over time. Also called a strawberry mark.Cardiovascular
hemarthrosisBleeding into the joints.skeletal
hemat/obloodcardiovascular
hematemesisVomiting blood.digestive
hematocolposAn accumulation of menstrual blood in the vagina.Reproductive
hematocritThe percentage by volume of red blood cells in a given sample.Cardiovascular
hematologyThe medical specialty focused on the diagnosis, treatment and prevention of blood diseases.Cardiovascular
hematomaAn abnormal collection of blood outside of a blood vessel. A bruise.integumentary
hematometraAn accumulation of menstrual blood in the uterus.Reproductive
hematospermiaBlood in the semen.reproductive
hematuriaRed blood cells in the urine.urinary
hemi-halfgeneral
hemianopiaThe loss of part of the field of view on the same side, in both eyes. A common side effect of stroke or brain injury. eyes and ears
hemiparesisWeakness or paralysis of the entire left or right side of the body. Caused by congenital conditions, trauma, stroke or tumors.muscular
hemiplegiaParalysis of one side of the body.muscular
hemobiliaBleeding into the biliary passages. General
hemochromatosisA disorder of iron metabolism where the body absorbs too much iron. Treatment is required to avoid organ damage. A genetic disorder. 8% of population is a carrier.Cardiovascular
hemodialysisA therapeutic procedure used with kidney failure involving removal of harmful wastes and fluids from the blood.urinary
hemodynamicsThe forces involved in the movement of the blood through the cardiovascular system. Cardiovascular
hemoglobinsThe oxygen-carrying proteins of erythrocytes (red blood cells). Cardiovascular
hemopneumothoraxCollection both blood and air in the pleural cavity. Respiratory
hemoptysisCoughing up blood or blood-stained mucus from the respiratory tract.Respiratory
hemorrhageBleeding or escape of blood from a vessel. Bleeding can occur externally or internally to the body.Cardiovascular
hemorrhagic strokeA stroke that occurs when a weakened blood vessel ruptures. Also called an aneurysm.nervous
hemorrhoidsSwollen veins in the lower part of the rectum or anus.Digestive
hemospermiaBlood in the semen, often due to inflammation of the prostate or the seminal vesicles.Reproductive
hemostasisThe complex body process which spontaneously stops hemorrhages. This includes vessel contraction and blood adhesion, aggregation and coagulation.Cardiovascular
hemothoraxHemorrhage within the pleural cavity, often from chest trauma.Respiratory
heparinAn endogenous, short-acting anticoagulant.Cardiovascular
hepat/oliverdigestive
hepaticPertaining to the liver.Digestive
hepatitisInflammation of the liver caused by viral agents.digestive
hepatoblastomaA malignant neoplasm occurring in young children, primarily in the liver,Digestive
hepatocytesA parenchymal liver cell.Digestive
hepatomaA malignant tumor of the liverDigestive
hepatomegalyHaving an enlarged liver.Digestive
hepta-sevengeneral
herbicidesPesticides used to destroy vegetation, particularly weeds and grasses.General
heredityThe transmission of traits encoded in genes from parent to offspring. Reproductive
heredo-heir, hereditygeneral
hermaphroditicA plant or animal with both male and female sex organs.General
herni/oherniamuscular
herniaAbnormal protrusion of tissue, structure, or part of an organ through the bone, muscular tissue, or the membrane by which it is normally contained.muscular
herniorrhaphySurgical repair of a hernia General
herpesAn infection caused by a herpes simplex virus. Can affect the genitals, buttocks or anal areas. Oral herpes causes cold sores on the face or mouth.lymphatic
herpes labialisCold sores caused by herpes simplex I.digestive
heter-different, othergeneral
heterophoriaA tendency for deviation of the eyes from parallelism, prevented by binocular vision.Eyes And Ears
heterosexualityThe sexual attraction between members of the opposite sex. Reproductive
heterosisGreater vigor of the first generation hybrid than is shown by either parent.Reproductive
heuristicsA set of rules or methods for solving problems other than by algorithm. The solution is not guaranteed to be optimal, but sufficient for a given set of goals. General
HEVhepatitis E general
hex-sixgeneral
-hexiaconditiongeneral
HFheart failure cardiovascular
HFOVhigh frequency oscillatory ventilationrespiratory
Hgmercury general
hgbhemoglobin cardiovascular
HGFhuman growth factorendocrine
HGSILhigh-grade squamous intraepithelial lesion reproductive
hiat/ogap, opening, pausegeneral
hiatusAn aperture, gap or opening.General
hiccupA spasm of the diaphragm that causes a sudden inhalation followed by rapid closure of the glottis which produces a sound. Also called singultus.Respiratory
hidr/osweatintegumentary
hidrocystomaA cystic form of sweat gland adenoma, created by the cystic proliferation of apocrine secretory glands.Integumentary
hidrosisThe production and excretion of sweat.Integumentary
hidroticRelating to or causing sweating.Integumentary
high density lipoproteinCholesterol known as HDL that removes harmful cholesterol, reducing risk of heart problems.Cardiovascular
hipThe region of the body around the joint between the top of the femur and side of the pelvis.Skeletal
HIPAAHealth Insurance Portability and Accountability Act
hippocampusA curved elevation of gray matter extending the entire length of the floor of the temporal horn of the lateral ventricle (see also temporal lobe). It has a central role in memory processes. Nervous
hippusRhythmic pupillary dilation and constriction, independent of changes in illumination or convergence.Eyes And Ears
hirsutismExcessive hairiness in women, usually caused by hormonal imbalance.integumentary
hist/otissuegeneral
histamineAn amine found in body tissues released in allergic inflammatory reactions. It is a vasodilator, stimulant of heart rate and gastric secretion, constrictor of bronchial smooth muscle and also a centrally acting neurotransmitter. General
histiocytesMacrophages found in the tissues, as opposed to those found in the blood or serous cavities.General
histiocytomaA neoplasm containing histiocytes.General
histiocytosisAbnormal appearance of histiocytes. General
histogramA bar chart.General
histologyThe study of the structure of tissues on a microscopic level. General
hivHuman immunodeficiency virus.Lymphatic
hoarsenessAn unnaturally rough quality of voice. Respiratory
hod-pathwayGeneral
Hodgkin's lymphomaA type of lymphoma, a cancer of tissue in the lymph nodes, spleen, liver, and bone marrow. The first sign is often an enlargement of lymph node.lymphatic
holo-entire, completegeneral
holographyThe recording of three-dimensional images form using a laser beams.General
holter monitorA device that continuously records EKGs for hours or a few days, used to diagnose abnormal cardiac rhythms.Cardiovascular
home/osame, not changedgeneral
homeostasisThe process of maintaining physiological equilibrium.General
homosexualityThe sexual attraction or relationship between members of the same sex. Reproductive
hordeolumBlockage of an eyelid gland causing a small inflamed cyst at the lid margin. Also called a stye.eyes and ears
horm-impulse, urgeGeneral
hormoneSubstances having a specific regulatory effect on the activity of an organ or organs. General
hospiceA facility providing palliative and supportive care to a patient with a terminal illness and to the patient's family. General
hospice careCare provided to a dying person. Care may be provided in the home, in the hospital or in specialized facilities.General
hospitalistsPhysicians who are employed to work exclusively in hospital settings, often for managed care organizations. General
HPIhistory of present illness general
HRheart rate cardiovascular
HRThormone replacement therapy reproductive
HSILhigh-grade squamous intraepithelial lesion reproductive
HSVherpes simplex virus reproductive
HTNhypertension cardiovascular
humerusThe bone of the upper arm. It extends from the shoulder joint to the elbow joint.Skeletal
huntington diseaseAn inherited disorder characterized by the onset of progressive chorea (involuntary, rapid, irregular, jerky movements) and dementia in middle age.General
hxhistory general
hyal/oglass-likegeneral
hyalinA translucent substance occurring in pathological degeneration of tissues.Integumentary
hydr-waterGeneral
hydr/owater, fluidgeneral
hydremiaAn excess of water in the blood.Cardiovascular
hydroceleBuildup of the normal fluid around the testicle, common in infants, self-resolving.reproductive
hydrocephalusThe buildup of excessive cerebrospinal fluid in the brain. nervous
hydronephrosisAbnormal enlargement of a kidney, sometimes caused by blockage of the ureter.urinary
hygieneThe science and practices that promote or preserve healthGeneral
hygr/omoistureEyes and Ears
hymenA thin fold of mucous membrane situated at the orifice of the vagina. Reproductive
hymen/omembranereproductive
hyper-excessive, abovegeneral
hyperalgesiaAn abnormal increased sensation of pain, caused by damage to soft tissue containing nociceptors or injury to a peripheral nerve. General
hyperbaricAt a pressure higher than atmospheric pressure.General
hypercalcemiaToo much calcium in the blood.endocrine
hypercalciuriaExcretion of abnormally high level of calcium in the urine.Urinary
hypercapniaAbnormal increase in carbon dioxide in the blood.Respiratory
hyperemesis gravidarumSevere, intractable vomiting during early pregnancy. Often needs IV fluids and anti nausea agents.digestive
hyperemiaThe presence of an increased amount of blood in a body part due to increase of blood flow into the area or due to obstruction of outflow of blood from the area.General
hyperesthesiaHyperesthesia is a condition in which someone becomes highly sensitized to sensory stimuli. nervous
hyperglycemiaHigh blood sugar. A serious problem for diabetics.endocrine
hyperhidrosisExcessive sweating. Integumentary
hyperinsulinismAbnormally high levels of insulin in the blood. endocrine
hyperkalemiaAbnormally high potassium concentration in the blood, usually due to acute renal failure. Urinary
hyperkinesiaSpontaneous involuntary movements.muscular
hyperkinesisExcessive movement of muscles of the body.Muscular
hyperlipidemiaConditions with excess lipids (fats) in the blood. Cardiovascular
hypernatremiaAn excess of sodium in the blood.Cardiovascular
hyperopiaFarsightedness. Distant objects can be seen clearly, but close ones do not come into proper focus. eyes and ears
hyperostosisAbnormal thickening or growth of bone.Skeletal
hyperoxaluriaAbnormally high amounts of oxalates in the urine. Urinary
hyperoxiaAn excess of oxygen in tissues and organs.General
hyperphagiaOvereating.Digestive
hyperphosphatemiaAbnormally high level of phosphates in the blood.Cardiovascular
hyperpigmentationExcessive pigmentation of the skin, usually as a result of increased epidermal or dermal melanin pigmentation, hypermelanosis. The condition may arise from exposure to the sun.Integumentary
hyperpituitarismExcessive hormone production by the pituitary gland.endocrine
hyperplasiaAn abnormal increase in the number of cells in a tissue or organ without tumor formation.General
hyperpneaDeep breathing. Can be normal during exercise or abnormal due to anemia or sepsis.Respiratory
hypersensitivityAbnormally high response to an antigen.Lymphatic
hypersomniaExcessive sleepingGeneral
hyperstheniaExcessive strength or tension.General
hypertensionPersistently high systemic arterial blood pressure.Cardiovascular
hyperthyroidismExcessive hormone production by the thyroid. endocrine
hyperthyroxinemiaAbnormally elevated thyroxine level in the blood. Endocrine
hypertonicHaving increased tone or tension.General
hypertrichosisExcessive hair growth at inappropriate locations.Integumentary
hypertriglyceridemiaA condition of elevated levels of triglycerides in the blood. Cardiovascular
hypertrophyGeneral increase in volume of a tissue or organ produced entirely by enlargement of existing cells.General
hyperuricemiaAn abnormally high concentration of uric acid in the blood. It is associated with gout and also hypertension. General
hyperventilationBreathing faster or deeper than is metabolically necessary causing an excessive intake of oxygen and a reduction carbon dioxide level in arterial blood. Respiratory
hypesthesiaAbsent or reduced sensitivity to cutaneous stimulation. General
hyphemaBleeding in the anterior chamber of the eye. Eyes And Ears
hypn/osleepNervous
hypnosisA state of increased receptivity to suggestion and direction, initially induced by the influence of another person. Nervous
hypo-deficient, undergeneral
hypocalcemiaAbnormally low levels of calcium in the blood.Cardiovascular
hypocapniaDeficiency of carbon dioxide in arterial blood. Respiratory
hypochondriaAnxiety about one's own health and belief that one is likely to become ill even though there is no medical evidence of illness.Nervous
hypochondriasisAn overwhelming fear of having a serious disease.nervous
hypodermicBeneath the skin.General
hypogeusiaDiminished sense of taste.General
hypoglycemiaAbnormally low blood glucose (blood sugar) levels, usually less than 70 mg/dl.endocrine
hypogonadismAbnormally low functional activity of the gonads, with diminished growth and sexual developmentReproductive
hypohidrosisAbnormally low or absent perspiration.Integumentary
hypokalemiaAbnormally low potassium concentration in the blood.Cardiovascular
hypokinesiaAbnormally diminished movement of body musculature.General
hypomenorrheaExtremely light menstrual blood flow.reproductive
hyponatremiaInsufficient sodium levels in the blood. Can be caused by loss of sodium or by increased and excessive body fluids.Cardiovascular
hypoperfusionAbnormally low blood flow through an organ.Cardiovascular
hypoplasiaUnderdevelopment of a tissue or organ.General
hypopneaShallow or abnormally slow breathing.Respiratory
hypospadiasA birth defect due to malformation of the urethra in which the urethral opening is below its normal location.urinary
hypotensionAbnormally low blood pressure that can result in inadequate blood flow to the brain and other organs.Cardiovascular
hypothermiaLower than normal body temperature.General
hypotoniaPoor muscle tone usually detected at birth or during infancy. It is reflected in the APGAR score.muscular
hypotonicDenoting decreased tone or tension.General
hypotrichosisLess than the normal amount of hair.Integumentary
hypoventilationDeficient ventilation of the lungs resulting is low oxygen levels and high carbon dioxide levels in the blood.Respiratory
hypovolemiaAn abnormally low volume of circulating blood.Cardiovascular
hypoxemiaOxygen deficiency in arterial blood.Respiratory
hypoxiaInsufficient oxygen levels in body organs and tissues.Respiratory
hypsi-highSkeletal
hyster/outerusreproductive
hysterectomySurgical removal of the uterus. reproductive
hysteriaExcessive or uncontrollable emotion, such as fear or panic.Nervous
hysterosalpingographyFluoroscopic examination of the uterus and fallopian tubes.reproductive
hysteroscopyExamination of the uterine cavity using an endoscope.reproductive
hysterotomyAn incision in the uterus, performed through either the abdomen or the vagina. Reproductive
Hzhertz (cycles per second)

If you want to memorize medical terms, our flash cards are worth a try. Your study efficiency is greatly improved with our smart flash card system. We use a spaced repetition algorithm that presents flash cards based upon your progress over time. This means that your learn more and retain it longer.

An error has occurred. This application may no longer respond until reloaded. Reload 🗙