(thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
<noun.attribute> freq. cnt.: 2 freq. cnt.: 2
<noun.attribute> freq. cnt.: 2 freq. cnt.: 2
H |
enthalpy |
heat content |
total heat |
sample sentences
"enthalpy is the amount of energy in a system capable of doing mechanical work"
semantic pointers
member holonym
hypernym
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
<noun.quantity>
<noun.quantity>
H |
henry |
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
<noun.substance> freq. cnt.: 6 freq. cnt.: 6
<noun.substance> freq. cnt.: 6 freq. cnt.: 6
H |
atomic number 1 |
hydrogen |
lexical pointers
derivationally related form
semantic pointers
hyponym
hypernym
substance holonym
a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium
<noun.artifact>
<noun.artifact>
H-bomb |
fusion bomb |
hydrogen bomb |
thermonuclear bomb |
semantic pointers
hypernym
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>
<noun.person>
H. G. Wells |
Herbert George Wells |
Wells |
semantic pointers
instance hypernym
semantic pointers
instance hypernym
a British psychologist (born in Germany) noted for his theories of intelligence and personality and for his strong criticism of Freudian psychoanalysis
<noun.person>
<noun.person>
Eysenck |
H. J. Eysenck |
Hans Eysenck |
Hans Jurgen Eysenck |
semantic pointers
instance hypernym
United States journalist and literary critic (1880-1956)
<noun.person>
<noun.person>
H. L. Mencken |
Henry Louis Mencken |
Mencken |
semantic pointers
instance hypernym
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)
<noun.animal>
<noun.animal>
H. pylori |
Heliobacter pylori |
semantic pointers
hypernym
a group of volcanic and coral islands in the central Pacific
<noun.location>
<noun.location>
H.I. |
Hawaiian Islands |
Sandwich Islands |
semantic pointers
part holonym
part meronym
Hawaii, Hawai'i, Aloha State, HI, Haw.
Hawaii, Hawaii Island
Kahoolawe, Kahoolawe Island
Kauai, Kauai Island
Lanai, Lanai Island
Maui, Maui Island
Molokai, Molokai Island
Nihau, Nihau Island
Oahu, Oahu Island
Midway Islands
instance hypernym
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
<noun.artifact>
<noun.artifact>
Bounty |
H.M.S. Bounty |
semantic pointers
instance hypernym
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
<noun.substance> freq. cnt.: 136 freq. cnt.: 136
<noun.substance> freq. cnt.: 136 freq. cnt.: 136
H2O |
water |
semantic pointers
substance holonym
tear, teardrop
sweat, perspiration, sudor
water, body of water
snowflake, flake
ice crystal, snow mist, diamond dust, poudrin, ice needle, frost snow, frost mist
ice, water ice
hyponym
tap water
bath water
dishwater
distilled water
holy water
ground water, spring water, well water
hard water
limewater
meltwater
seawater, saltwater, brine
fresh water, freshwater
slush
soft water
bilge, bilge water
water of crystallization, water of crystallisation, water of hydration
hypernym
substance meronym
(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>
<noun.shape>
HA |
hour angle |
a combination of protease inhibitors taken with reverse transcriptase inhibitors; used in treating AIDS and HIV
<noun.artifact>
<noun.artifact>
HAART |
drug cocktail |
highly active antiretroviral therapy |
semantic pointers
hypernym
part meronym
a fluorocarbon that is replacing chlorofluorocarbon as a refrigerant and propellant in aerosol cans; considered to be somewhat less destructive to the atmosphere
<noun.substance>
<noun.substance>
HCFC |
hydrochlorofluorocarbon |
semantic pointers
hypernym
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>
<noun.substance>
HCG |
human chorionic gonadotrophin |
human chorionic gonadotropin |
semantic pointers
hypernym
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
<noun.substance>
<noun.substance>
HDL |
alpha-lipoprotein |
high-density lipoprotein |
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
<noun.substance>
<noun.substance>
HDL cholesterol |
semantic pointers
substance holonym
hypernym
a television system that has more than the usual number of lines per frame so its pictures show more detail
<noun.communication>
<noun.communication>
HDTV |
high-definition television |
semantic pointers
hypernym
a fluorocarbon emitted as a by-product of industrial manufacturing
<noun.substance>
<noun.substance>
HFC |
hydrofluorocarbon |
semantic pointers
hypernym
the United States federal department that administers all federal programs dealing with health and welfare; created in 1979
<noun.group>
<noun.group>
Department of Health and Human Services |
HHS |
Health and Human Services |
semantic pointers
hypernym
part meronym
a state in the United States in the central Pacific on the Hawaiian Islands
<noun.location>
<noun.location>
Aloha State |
HI |
Haw. |
Hawai'i |
Hawaii |
lexical pointers
derivationally related form
semantic pointers
member of this domain (region)
dolphinfish, dolphin, mahimahi
lanai
uke, ukulele
Hawaiian
luau
dolphinfish, mahimahi
malahini
macadamia nut, macadamia nut tree, Macadamia ternifolia
part meronym
instance hypernym
part holonym
the virus that causes acquired immune deficiency syndrome (AIDS); it replicates in and kills the helper T cells
<noun.animal>
<noun.animal>
HIV |
human immunodeficiency virus |
semantic pointers
hypernym
semantic pointers
hypernym
a liver enzyme that is responsible for producing cholesterol
<noun.substance>
<noun.substance>
5-hydroxy-3-methylglutaryl-coenzyme A reductase |
HMG-CoA reductase |
semantic pointers
hypernym
group insurance that entitles members to services of participating hospitals and clinics and physicians
<noun.possession>
<noun.possession>
HMO |
health maintenance organization |
semantic pointers
hypernym
a colorless explosive liquid that is volatile and poisonous and foul-smelling
<noun.substance>
<noun.substance>
HN |
azoimide |
hydrazoic acid |
hydrogen azide |
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>
<noun.communication>
HND |
Higher National Diploma |
semantic pointers
hypernym
domain of synset (region)