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Glossary · Nouns · H

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TermTypeDefinitionClassificationsUpdated
Hypocellularitynounthe state of having abnormally few cellsverifiedMay 18, 2026
Hypochloritenounan anion (or its salt and ester derivatives) made up of one chlorine and one oxygen atom, chemical symbol ClO-verifiedMay 18, 2026
Hypochlorous AcidnounMWEa weak unstable acid known only in solution and in its saltsverifiedMay 18, 2026
Hypochondrianounchronic and abnormal anxiety about imaginary symptoms and ailmentsverifiedMay 18, 2026
Hypochondriasisnounchronic and abnormal anxiety about imaginary symptoms and ailmentsverifiedMay 18, 2026
Hypochondriumnounthe upper region of the abdomen just below the lowest ribs on either side of the epigastriumverifiedMay 18, 2026
Hypochromic AnaemianounMWEanemia characterized by a decrease in the concentration of corpuscular hemoglobinverifiedMay 18, 2026
Hypochromic AnemianounMWEanemia characterized by a decrease in the concentration of corpuscular hemoglobinverifiedMay 18, 2026
Hypocorismnouna name of endearment (especially one using a diminutive suffix)verifiedMay 18, 2026
Hypocrisynouninsincerity by virtue of pretending to have qualities or beliefs that you do not really haveverifiedMay 18, 2026
Hypocritenouna person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motivesverifiedMay 18, 2026
Hypocycloidnouna line generated by a point on a circle that rolls around inside another circleverifiedMay 18, 2026
Hypodermic NeedlenounMWEa hollow needleverifiedMay 18, 2026
Hypodermic SyringenounMWEa piston syringe that is fitted with a hypodermic needle for giving injectionsverifiedMay 18, 2026
Hypodermisnounlayer of cells that secretes the chitinous cuticle in e.g. arthropodsverifiedMay 18, 2026
Hypoesthesianounimpairment of tactile sensitivityverifiedMay 18, 2026
Hypogammaglobulinemianounan abnormally low concentration of gamma globulin in the blood and increased risk of infectionverifiedMay 18, 2026
Hypogastric ArterynounMWEthe inner branch of the common iliac artery on either side of the bodyverifiedMay 18, 2026
Hypogastric PlexusnounMWEa plexus of nerves serving the pelvic visceraverifiedMay 18, 2026
Hypogastric VeinnounMWEa vein that unites with the external iliac vein to form the common iliac veinverifiedMay 18, 2026
Hypoglossalnounsupplies intrinsic muscles of the tongue and other tongue musclesverifiedMay 18, 2026
Hypoglossal NervenounMWEsupplies intrinsic muscles of the tongue and other tongue musclesverifiedMay 18, 2026
Hypoglycaemianounabnormally low blood sugar usually resulting from excessive insulin or a poor dietverifiedMay 18, 2026
Hypoglycemianounabnormally low blood sugar usually resulting from excessive insulin or a poor dietverifiedMay 18, 2026
Hypoglycemic AgentnounMWEany of various agents that decrease the level of glucose in the blood and are used in the treatment of diabetes mellitusverifiedMay 18, 2026
Hypogonadismnounincompetence of the gonads (especially in the male with low testosterone)verifiedMay 18, 2026
Hypokalemianounabnormally low level of potassium in the circulating blood leading to weakness and heart abnormalitiesverifiedMay 18, 2026
Hypolipoproteinemianounany of various disorders of lipoprotein and cholesterol metabolism that result in low levels of lipoprotein and cholesterol in the circulating bloodverifiedMay 18, 2026
Hyponatremianounabnormally low level of sodium in the bloodverifiedMay 18, 2026
Hyponitrous AcidnounMWEan explosive white crystalline weak acid (H2N2O2)verifiedMay 18, 2026
Hyponymnouna word that is more specific than a given wordverifiedMay 18, 2026
Hyponymynounthe semantic relation of being subordinate or belonging to a lower rank or classverifiedMay 18, 2026
Hypoparathyroidismnouninadequate secretion of parathyroid hormone resulting in abnormally low levels of calcium in the bloodverifiedMay 18, 2026
Hypophosphoric AcidnounMWEa crystalline tetrabasic acid (H4P2O6)verifiedMay 18, 2026
Hypophosphorous AcidnounMWEa clear or yellow monobasic acid (H3PO2)verifiedMay 18, 2026
Hypophyseal StalknounMWEthe funnel-shaped stalk connecting the pituitary gland to the hypothalamusverifiedMay 18, 2026
Hypophysectomynounsurgical removal of the pituitary glandverifiedMay 18, 2026
Hypophysial DwarfnounMWEa dwarf whose condition is caused by a deficiency of growth hormones, rather than by genetic factors (as in the case of the achondroplastic dwarf)verifiedMay 18, 2026
Hypophysisnounthe master gland of the endocrine systemverifiedMay 18, 2026
Hypopigmentationnoununusual lack of skin colorverifiedMay 18, 2026
Hypoplasianoununderdevelopment of an organ because of a decrease in the number of cellsverifiedMay 18, 2026
Hypoplastic AnaemianounMWEanemia resulting from inadequately functioning bone marrowverifiedMay 18, 2026
Hypoplastic AnemianounMWEanemia resulting from inadequately functioning bone marrowverifiedMay 18, 2026
Hypoplastic DwarfnounMWEan achondroplastic dwarf whose small size is the result of a genetic defectverifiedMay 18, 2026
Hypopneanounslow or shallow breathingverifiedMay 18, 2026
Hypoproteinemianounabnormally low level of protein in the bloodverifiedMay 18, 2026
Hyposmianounlessened sensitivity to odorsverifiedMay 18, 2026
Hypospadiasnounan abnormal condition in males in which the urethra opens on the under surface of the penisverifiedMay 18, 2026
Hypostasisnounany of the three persons of the Godhead constituting the Trinity especially the person of Christ in which divine and human natures are unitedverifiedMay 18, 2026
Hypostasis of ChristnounMWEany of the three persons of the Godhead constituting the Trinity especially the person of Christ in which divine and human natures are unitedverifiedMay 18, 2026
Hypostatisationnounregarding something abstract as a material thingverifiedMay 18, 2026
Hypostatizationnounregarding something abstract as a material thingverifiedMay 18, 2026
Hypotensionnounabnormally low blood pressureverifiedMay 18, 2026
Hypotenusenounthe side of a right triangle opposite the right angleverifiedMay 18, 2026
Hypothalamic Releasing FactornounMWEany of several hormones produced in the hypothalamus and carried by a vein to the anterior pituitary gland where they stimulate the release of anterior pituitary hormonesverifiedMay 18, 2026
Hypothalamic Releasing HormonenounMWEany of several hormones produced in the hypothalamus and carried by a vein to the anterior pituitary gland where they stimulate the release of anterior pituitary hormonesverifiedMay 18, 2026
Hypothalamusnouna basal part of the diencephalon governing autonomic nervous systemverifiedMay 18, 2026
Hypothermianounsubnormal body temperatureverifiedMay 18, 2026
Hypothesisnouna message expressing an opinion based on incomplete evidenceverifiedMay 18, 2026
Hypothesis TestingnounMWEA term used generally to refer to testing significance when specific alternatives to the null hypothesis are considered.ProcessMay 18, 2026
Hypothetical CreaturenounMWEa creature that has not been observed but is hypothesized to existverifiedMay 18, 2026
Hypothetical ImperativenounMWEa principle stating the action required to attain a desired goalverifiedMay 18, 2026
Hypothrombinemianouna low level of prothrombin (factor II) in the circulating bloodverifiedMay 18, 2026
Hypothyroidismnounan underactive thyroid glandverifiedMay 18, 2026
Hypotonianoun(of muscular tissue) the state of being hypotonicverifiedMay 18, 2026
Hypotonicitynoun(of a solution) the extent to which a solution has a lower osmotic pressure than some otherverifiedMay 18, 2026
Hypotonusnoun(of muscular tissue) the state of being hypotonicverifiedMay 18, 2026
Hypovitaminosisnounany of several diseases caused by deficiency of one or more vitaminsverifiedMay 18, 2026
Hypovolaemianouna blood disorder consisting of a decrease in the volume of circulating bloodverifiedMay 18, 2026
Hypovolemianouna blood disorder consisting of a decrease in the volume of circulating bloodverifiedMay 18, 2026
Hypovolemic ShocknounMWEshock caused by severe blood or fluid lossverifiedMay 18, 2026
Hypoxianounoxygen deficiency causing a very strong drive to correct the deficiencyverifiedMay 18, 2026
Hypoxic HypoxianounMWEhypoxia resulting from defective oxygenation of the blood in the lungsverifiedMay 18, 2026
Hypozeugmanounuse of a series of subjects with a single predicateverifiedMay 18, 2026
Hypozeuxisnounuse of a series of parallel clauses (as in `I came, I saw, I conquered')verifiedMay 18, 2026
Hypsographynounthe scientific study of the earth's configuration above sea level (emphasizing the measurement of land altitudes relative to sea level)verifiedMay 18, 2026
Hypsometernounan altimeter that uses the boiling point of water to determine land elevationverifiedMay 18, 2026
Hypsometrynounmeasurement of the elevation of land above sea levelverifiedMay 18, 2026
Hyraxnounany of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toesverifiedMay 18, 2026
Hysonnouna Chinese green tea with twisted leavesverifiedMay 18, 2026
Hyssopnouna European mint with aromatic and pungent leaves used in perfumery and as a seasoning in cookeryverifiedMay 18, 2026
Hyssop LoosestrifenounMWEannual with small solitary pink flowersverifiedMay 18, 2026
Hyssop OilnounMWEused chiefly in liqueursverifiedMay 18, 2026
Hysterectomynounsurgical removal of the uterusverifiedMay 18, 2026
Hysteresisnounthe lagging of an effect behind its causeverifiedMay 18, 2026
Hysterianounneurotic disorder characterized by violent emotional outbreaks and disturbances of sensory and motor functionsverifiedMay 18, 2026
Hysterical NeurosisnounMWEneurotic disorder characterized by violent emotional outbreaks and disturbances of sensory and motor functionsverifiedMay 18, 2026
Hysterocatalepsynounhysteria with cataleptic symptomsverifiedMay 18, 2026
HysterosalpingogramnounX ray of the uterus and Fallopian tubesverifiedMay 18, 2026
Hysteroscopynounvisual examination of the uterus and uterine lining using an endoscope inserted through the vaginaverifiedMay 18, 2026
Hysterotomynounsurgical incision into the uterus (as in cesarean section)verifiedMay 18, 2026