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Words starting with h

Word Definition
H 1. the eighth letter of the English alphabet, is classed among the consonants, and is formed with the mouth organs in the same position as that of the succeeding vowel. It is used with certain consonants to form digraphs representing sounds which are not found in the alphabet, as sh, th, /, as in shall, thing, /ine (for zh see /274); also, to modify the sounds of some other letters, as when placed after c and p, with the former of which it represents a compound sound like that of tsh, as in charm (written also tch as in catch), with the latter, the sound of f, as in phase, phantom. In some words, mostly derived or introduced from foreign languages, h following c and g indicates that those consonants have the hard sound before e, i, and y, as in chemistry, chiromancy, chyle, Ghent, Ghibelline, etc.; in some others, ch has the sound of sh, as in chicane. See Guide to Pronunciation, // 153, 179, 181-3, 237-8.
2. The seventh degree in the diatonic scale, being used by the Germans for B natural. See B.
3. (n.) (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure
4. (n.) the 8th letter of the Roman alphabet
5. (n.) the constant of proportionality relating the energy of a photon to its frequency; approximately 6.626 x 10^-34 joule-second
6. (n.) 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
7. (n.) 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
H-bomb 1. (n.) a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium
H-shaped 1. (adj.) shaped in the form of the letter H
H. G. Wells 1. (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)
H. H. Munro 1. (n.) British writer of short stories (1870-1916)
H. J. Eysenck 1. (n.) a British psychologist (born in Germany) noted for his theories of intelligence and personality and for his strong criticism of Freudian psychoanalysis
H. L. Mencken 1. (n.) United States journalist and literary critic (1880-1956)
H. pylori 1. (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)
H.I. 1. (n.) a group of volcanic and coral islands in the central Pacific
H.M.S. Bounty 1. (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
H.P. 1. (n.) a unit of power equal to 746 watts
H2O 1. (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
ha 1. (interj.) An exclamation denoting surprise, joy, or grief. Both as uttered and as written, it expresses a great variety of emotions, determined by the tone or the context. When repeated, ha, ha, it is an expression of laughter, satisfaction, or triumph, sometimes of derisive laughter; or sometimes it is equivalent to "Well, it is so."
2. (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
ha-ha 1. (n.) A sunk fence; a fence, wall, or ditch, not visible till one is close upon it.
2. (n.) a ditch with one side being a retaining wall; used to divide lands without defacing the landscape
3. (n.) a loud laugh that sounds like a horse neighing
ha'p'orth 1. (n.) the amount that can be bought for a halfpenny
ha'penny 1. (n.) an English coin worth half a penny
haaf 1. (n.) The deepsea fishing for cod, ling, and tusk, off the Shetland Isles.
haak 1. (n.) A sea fish. See Hake.
haar 1. (n.) A fog; esp., a fog or mist with a chill wind.
HAART 1. (n.) a combination of protease inhibitors taken with reverse transcriptase inhibitors; used in treating AIDS and HIV
Haastia 1. (n.) genus of New Zealand mat-forming herbs or subshrubs: vegetable sheep
Haastia pulvinaris 1. (n.) cushion-forming New Zealand herb having leaves densely covered with tawny hairs
Habacuc 1. (n.) an Old Testament book telling Habakkuk's prophecies
Habakkuk 1. (n.) an Old Testament book telling Habakkuk's prophecies
2. (n.) a Hebrew minor prophet
habanera 1. (n.) a Cuban dance in duple time
2. (n.) music composed in duple time for dancing the habanera
habeas corpus 1. A writ having for its object to bring a party before a court or judge; especially, one to inquire into the cause of a person's imprisonment or detention by another, with the view to protect the right to personal liberty; also, one to bring a prisoner into court to testify in a pending trial.
2. (n.) the civil right to obtain a writ of habeas corpus as protection against illegal imprisonment
3. (n.) a writ ordering a prisoner to be brought before a judge
Habenaria 1. (n.) chiefly terrestrial orchids with tubers or fleshy roots often having long slender spurs and petals and lip lobes; includes species formerly placed in genus Gymnadeniopsis
Habenaria albiflora 1. (n.) bog orchid of eastern North America with a spike of pure white fringed flowers
Habenaria bifolia 1. (n.) south European orchid having fragrant greenish-white flowers; sometimes placed in genus Habenaria
Habenaria chlorantha 1. (n.) south European orchid with dark green flowers that are larger and less fragrant than Platanthera bifolia; sometimes placed in genus Habenaria