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Glossary · Nouns · H

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TermTypeDefinitionClassificationsUpdated
Hypercholesterolemianounthe presence of an abnormal amount of cholesterol in the cells and plasma of the bloodverifiedMay 18, 2026
Hyperchromic AnaemianounMWEanemia characterized by an increase in the concentration of corpuscular hemoglobinverifiedMay 18, 2026
Hyperchromic AnemianounMWEanemia characterized by an increase in the concentration of corpuscular hemoglobinverifiedMay 18, 2026
Hypercoasternouna roller coaster that goes up 200 feet or higher and can catapult riders from 0 to 70 mph in 4 seconds by motors originally designed to launch rocketsverifiedMay 18, 2026
Hyperdactylynounbirth defect characterized by the presence of more than the normal number of fingers or toesverifiedMay 18, 2026
Hyperemesisnounsevere and excessive vomitingverifiedMay 18, 2026
Hyperemesis GravidarumnounMWEhyperemesis during pregnancyverifiedMay 18, 2026
Hyperemianounincreased blood in an organ or other body partverifiedMay 18, 2026
Hyperextensionnoungreater than normal extensionverifiedMay 18, 2026
Hyperfocal DistancenounMWEthe distance in front of a lens that is focused at infinity beyond which all objects are well defined and clearverifiedMay 18, 2026
Hyperglycaemianounabnormally high blood sugar usually associated with diabetesverifiedMay 18, 2026
Hyperglycemianounabnormally high blood sugar usually associated with diabetesverifiedMay 18, 2026
Hyperhidrosisnounexcessive and profuse perspirationverifiedMay 18, 2026
Hypericismnouna severe dermatitis of herbivorous domestic animals attributable to photosensitivity from eating Saint John's wortverifiedMay 18, 2026
Hyperidrosisnounexcessive and profuse perspirationverifiedMay 18, 2026
Hyperkalemianounhigher than normal levels of potassium in the circulating bloodverifiedMay 18, 2026
Hyperkinetic SyndromenounMWEa condition (mostly in boys) characterized by behavioral and learning disordersverifiedMay 18, 2026
HyperlinknounAn item on a webpage that, when selected, transfers the user directly to another location in a hypertext document or to another webpage, perhaps on a different machine. Also simply called a "link."DataMay 12, 2026
Hyperlipaemianounpresence of excess lipids in the bloodverifiedMay 18, 2026
Hyperlipemianounpresence of excess lipids in the bloodverifiedMay 18, 2026
Hyperlipidaemianounpresence of excess lipids in the bloodverifiedMay 18, 2026
Hyperlipidemianounpresence of excess lipids in the bloodverifiedMay 18, 2026
Hyperlipoidaemianounpresence of excess lipids in the bloodverifiedMay 18, 2026
Hyperlipoidemianounpresence of excess lipids in the bloodverifiedMay 18, 2026
Hyperlipoproteinemianounany of various disorders of lipoprotein and cholesterol metabolism that result in high levels of lipoprotein and cholesterol in the circulating bloodverifiedMay 18, 2026
Hypermarketnouna huge supermarket (usually built on the outskirts of a town)verifiedMay 18, 2026
Hypermastigotenounflagellate symbiotic in the intestines of e.g. termitesverifiedMay 18, 2026
Hypermedianouna multimedia system in which related items of information are connected and can be presented togetherverifiedMay 18, 2026
Hypermedia SystemnounMWEa multimedia system in which related items of information are connected and can be presented togetherverifiedMay 18, 2026
Hypermenorrheanounabnormally heavy or prolonged menstruationverifiedMay 18, 2026
Hypermetropianounabnormal condition in which vision for distant objects is better than for near objectsverifiedMay 18, 2026
Hypermetropynounabnormal condition in which vision for distant objects is better than for near objectsverifiedMay 18, 2026
Hypermotilitynounexcessive movementverifiedMay 18, 2026
Hypernatremianounexcessive amounts of sodium in the bloodverifiedMay 18, 2026
Hypernymnouna word that is more generic than a given wordverifiedMay 18, 2026
Hypernymynounthe semantic relation of being superordinate or belonging to a higher rank or classverifiedMay 18, 2026
Hyperonnounany baryon that is not a nucleonverifiedMay 18, 2026
Hyperopenouna person with hyperopiaverifiedMay 18, 2026
Hyperopianounabnormal condition in which vision for distant objects is better than for near objectsverifiedMay 18, 2026
Hyperparametersnounthe parameters that are used to either configure a ML model (e.g., the penalty parameter C in a support vector machine, and the learning rate to train a neural network) or to specify the algorithm used to minimize the loss function (e.g., the activation function and optimizer types in a neural network, and the kernel type in a support vector machine).DataIPMay 18, 2026
Hyperparathyroidismnounexcessive secretion of parathyroid hormone resulting in abnormally high levels of calcium in the bloodverifiedMay 18, 2026
Hyperpiesianounpersistent and pathological high blood pressure for which no specific cause can be foundverifiedMay 18, 2026
Hyperpiesisnounpersistent and pathological high blood pressure for which no specific cause can be foundverifiedMay 18, 2026
Hyperpigmentationnoununusual darkening of the skinverifiedMay 18, 2026
Hyperpituitarismnounexcessive activity of the pituitary gland (especially overactivity of the anterior lobe which leads to excess secretion of growth hormone)verifiedMay 18, 2026
Hyperplasianounabnormal increase in number of cellsverifiedMay 18, 2026
Hyperpneanounenergetic (deep and rapid) respiration that occurs normally after exercise or abnormally with fever or various disordersverifiedMay 18, 2026
Hyperpyrexianounextremely high fever (especially in children)verifiedMay 18, 2026
Hypersecretionnounexcessive secretionverifiedMay 18, 2026
Hypersensitivitynounpathological sensitivityverifiedMay 18, 2026
Hypersensitivity ReactionnounMWEan inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods)verifiedMay 18, 2026
Hypersomnianounan inability to stay awakeverifiedMay 18, 2026
Hypersplenismnounenlarged spleen and a decrease in one or more types of blood cellsverifiedMay 18, 2026
Hypertensionnouna common disorder in which blood pressure remains abnormally high (a reading of 140/90 mm Hg or greater)verifiedMay 18, 2026
Hypertextnounmachine-readable text that is not sequential but is organized so that related items of information are connectedverifiedMay 18, 2026
Hypertext Markup LanguagenounMWEThe set of markup symbols or codes inserted in a file intended for display on a World Wide Web browser page.DataMay 12, 2026
Hypertext Markup Language (HTML)nounMWEA set of codes that can be inserted into text files to indicate special typefaces, inserted images, and links to other hypertext documents.DataMay 12, 2026
Hypertext SystemnounMWEa database management system that allows strings of text (`objects') to be processed as a complex network of nodes that are linked together in an arbitrary wayverifiedMay 18, 2026
Hypertext Transfer ProtocolnounMWEA communication protocol used to connect to servers on the World Wide Web. Its primary function is to establish a connection with a web server and transmit hypertext markup language (HTML), extensible markup language (XML) or other pages to client browsersNetworkMay 12, 2026
Hypertext Transfer Protocol SecurenounMWEA protocol for accessing a secure web server, whereby all data transferred are encrypted.NetworkMay 9, 2026
Hyperthermianounabnormally high body temperatureverifiedMay 18, 2026
Hyperthermynounabnormally high body temperatureverifiedMay 18, 2026
Hyperthyroidismnounan overactive thyroid glandverifiedMay 18, 2026
Hypertonianoun(of muscular tissue) the state of being hypertonicverifiedMay 18, 2026
Hypertonicitynoun(of a solution) the extent to which a solution has a higher osmotic pressure than some otherverifiedMay 18, 2026
Hypertonusnoun(of muscular tissue) the state of being hypertonicverifiedMay 18, 2026
Hypertrophic CardiomyopathynounMWEa disorder in which the heart muscle is so strong that it does not relax enough to fill with the heart with blood and so has reduced pumping abilityverifiedMay 18, 2026
Hypertrophic RosaceanounMWEenlargement of the nose with dilation of follicles and redness and prominent vascularity of the skinverifiedMay 18, 2026
Hypervelocitynounexcessive velocityverifiedMay 18, 2026
Hyperventilationnounan increased depth and rate of breathing greater than demanded by the body needsverifiedMay 18, 2026
HypervisornounA piece of software that provides abstraction of all physical resources (such as central processing units, memory, network, and storage) and thus enables multiple computing stacks (consisting of an operating system, middleware and application programs) called virtual machines to be run on a single physical host.SystemMay 9, 2026
Hypervitaminosisnounan abnormal condition resulting from taking vitamins excessivelyverifiedMay 18, 2026
Hypervolaemianouna blood disorder consisting of an increase in the volume of circulating bloodverifiedMay 18, 2026
Hypervolemianouna blood disorder consisting of an increase in the volume of circulating bloodverifiedMay 18, 2026
Hypesthesianounimpairment of tactile sensitivityverifiedMay 18, 2026
Hyphanounany of the threadlike filaments forming the mycelium of a fungusverifiedMay 18, 2026
Hyphemanounbleeding into the interior chamber of the eyeverifiedMay 18, 2026
Hyphenationnoundivision of a word especially at the end of a line on a pageverifiedMay 18, 2026
Hypnagoguenounan agent that induces drowsiness or sleepverifiedMay 18, 2026
Hypnoanalysisnounthe use of hypnosis in conjunction with psychoanalysisverifiedMay 18, 2026
Hypnogenesisnounthe induction of sleep or hypnosisverifiedMay 18, 2026
Hypnopedianounteaching during sleep, such as by using recordingsverifiedMay 18, 2026
Hypnophobianouna morbid fear of falling asleepverifiedMay 18, 2026
Hypnosisnouna state that resembles sleep but that is induced by suggestionverifiedMay 18, 2026
Hypnotherapynounthe use of hypnosis in psychotherapyverifiedMay 18, 2026
Hypnotic TrancenounMWEa trance induced by the use of hypnosisverifiedMay 18, 2026
Hypnotisernouna person who induces hypnosisverifiedMay 18, 2026
Hypnotismnounthe act of inducing hypnosisverifiedMay 18, 2026
Hypnotistnouna person who induces hypnosisverifiedMay 18, 2026
Hypnotizernouna person who induces hypnosisverifiedMay 18, 2026
Hyponouna piston syringe that is fitted with a hypodermic needle for giving injectionsverifiedMay 18, 2026
Hypo-Eutectoid SteelnounMWEa steel that contains less that 0.9% carbonverifiedMay 18, 2026
Hypoadrenalismnouna glandular disorder caused by failure of function of the cortex of the adrenal gland and marked by anemia and prostration with brownish skinverifiedMay 18, 2026
Hypoadrenocorticismnouna glandular disorder caused by failure of function of the cortex of the adrenal gland and marked by anemia and prostration with brownish skinverifiedMay 18, 2026
Hypobasidiumnounspecial cell constituting the base of the basidium in various fungi especially of the order TremellalesverifiedMay 18, 2026
Hypobetalipoproteinemianouna hereditary disorder characterized by low levels of beta-lipoproteins and lipids and cholesterolverifiedMay 18, 2026
Hypoblastnounthe inner germ layer that develops into the lining of the digestive and respiratory systemsverifiedMay 18, 2026
Hypocalcaemianounabnormally low level of calcium in the bloodverifiedMay 18, 2026
Hypocalcemianounabnormally low level of calcium in the bloodverifiedMay 18, 2026
Hypocapnianouna state in which the level of carbon dioxide in the blood is lower than normalverifiedMay 18, 2026