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more info H, n.
(thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
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sample sentences

"enthalpy is the amount of energy in a system capable of doing mechanical work"
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hypernym
domain of synset (topic)
the 8th letter of the Roman alphabet
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a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second
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a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
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derivationally related form
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hyponym
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substance holonym
more info H-bomb, n.
a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium
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more info H-shaped, adj.
shaped in the form of the letter H
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similar to
more info H. G. Wells, n.
prolific English writer best known for his science-fiction novels; he also wrote on contemporary social problems and wrote popular accounts of history and science (1866-1946)
<noun.person>

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instance hypernym
more info H. H. Munro, n.
British writer of short stories (1870-1916)
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more info H. J. Eysenck, n.
a British psychologist (born in Germany) noted for his theories of intelligence and personality and for his strong criticism of Freudian psychoanalysis
<noun.person>

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more info H. L. Mencken, n.
United States journalist and literary critic (1880-1956)
<noun.person>

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instance hypernym
more info H. pylori, n.
the type species of genus Heliobacter; produces urease and is associated with several gastroduodenal diseases (including gastritis and gastric ulcers and duodenal ulcers and other peptic ulcers)
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more info H.I., n.
more info H.M.S. Bounty, n.
a ship of the British navy; in 1789 part of the crew mutinied against their commander William Bligh and set him afloat in an open boat
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more info H.P., n.
a unit of power equal to 746 watts
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more info H2O, n.
binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent
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lexical pointers
derivationally related form
more info HA, n.
(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day
<noun.shape>

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domain of synset (topic)
hypernym
more info HAART, n.
a combination of protease inhibitors taken with reverse transcriptase inhibitors; used in treating AIDS and HIV
<noun.artifact>

more info HAZMAT, n.
an abbreviation for `hazardous material' used on warning signs
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sample sentences

"NO HAZMATS IN TUNNEL"
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hypernym
more info HCFC, n.
a fluorocarbon that is replacing chlorofluorocarbon as a refrigerant and propellant in aerosol cans; considered to be somewhat less destructive to the atmosphere
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more info HCG, n.
hormone produced early in pregnancy by the placenta; detection in the urine and serum is the basis for one kind of pregnancy test
<noun.substance>

more info HDL, n.
a lipoprotein that transports cholesterol in the blood; composed of a high proportion of protein and relatively little cholesterol; high levels are thought to be associated with decreased risk of coronary heart disease and atherosclerosis
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more info HDL cholesterol, n.
the cholesterol in high-density lipoproteins; the `good' cholesterol; a high level in the blood is thought to lower the risk of coronary artery disease
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substance holonym
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more info HDTV, n.
a television system that has more than the usual number of lines per frame so its pictures show more detail
<noun.communication>

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more info HF, n.
3 to 30 megahertz
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more info HFC, n.
a fluorocarbon emitted as a by-product of industrial manufacturing
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more info HHS, n.
the United States federal department that administers all federal programs dealing with health and welfare; created in 1979
<noun.group>

more info HI, n.
more info HIV, n.
the virus that causes acquired immune deficiency syndrome (AIDS); it replicates in and kills the helper T cells
<noun.animal>

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hypernym
infection by the human immunodeficiency virus
<noun.state>

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hypernym
more info HMG-CoA reductase, n.
a liver enzyme that is responsible for producing cholesterol
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more info HMO, n.
group insurance that entitles members to services of participating hospitals and clinics and physicians
<noun.possession>

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hypernym
more info HN, n.
a colorless explosive liquid that is volatile and poisonous and foul-smelling
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substance meronym
more info HND, n.
a diploma given for vocational training that prepares the student for a career in a particular area; good students may progress to a course leading to a degree
<noun.communication>

more info HP, n.
a unit of power equal to 746 watts
<noun.quantity>

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part meronym