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Gyroscopic

Pertaining to the gyroscope; resembling the motion of the gyroscope.

Gyrose

Turned round like a crook, or bent to and fro.

Gyrostat

A modification of the gyroscope, consisting essentially of a fly wheel fixed inside a rigid case to which is attached a thin flange of metal for supporting the instrument. It is used in studying the dynamics of rotating bodies.

Gyrostatic

Of or pertaining to the gyrostat or to gyrostatics.

Gyrostatics

The doctrine or theory of the gyrostat, or of the phenomena of rotating bodies.

Gyrus

A convoluted ridge between grooves; a convolution; as, the gyri of the brain; the gyri of brain coral. See Brain.

Gyte

Delirious; senselessly extravagant; as, the man is clean gyte.

Gyve

To fetter; to shackle; to chain.

H-bomb

The hydrogen bomb, a thermonuclear weapon that releases atomic energy by union of hydrogen nuclei at high temperatures to form helium. The force of its explosion may range from one to hundreds of megatons of TNT equivalent.

H. M. S.

A prefix used in the names of British warships, meaning His Majesty's Ship or Her Majesty's Ship; as, H. M. S. Pinafore.

H2O

The chemical formula for water.

Ha

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./

Ha-ha

A sunk fence; a fence, wall, or ditch, not visible till one is close upon it.

Haaf

The deep-sea fishing for cod, ling, and tusk, off the Shetland Isles.

Haak

A sea fish. See Hake.

Haar

A fog; esp., a fog or mist with a chill wind.

Habenaria

A genus of chiefly terrestrial orchids with tubers or fleshy roots often having long slender spurs and petals and lip lobes; it includes species formerly placed in the genus Gymnadeniopsis.

Habendum

That part of a deed which follows the part called the premises, and determines the extent of the interest or estate granted; -- so called because it begins with the word Habendum.

Haberdasher

A dealer in small wares, as tapes, pins, needles, and thread.

Haberdashery

The goods and wares sold by a haberdasher; also (Fig.), trifles.

Habergeon

Properly, a short hauberk, but often used loosely for the hauberk.

Habilatory

Of or pertaining to clothing; wearing clothes.

Habile

Fit; qualified; also, apt.

Habilitate

To fit out; to equip; to qualify; to entitle.

Habitable

Capable of being inhabited; that may be inhabited or dwelt in; as, the habitable world.

Habitat

The natural abode, locality or region of an animal or plant.

Habitation

The act of inhabiting; state of inhabiting or dwelling, or of being inhabited; occupancy.

Habited

Clothed; arrayed; dressed; as, he was habited like a shepherd.

Habitual

Formed or acquired by habit or use.

Habituate

Firmly established by custom; formed by habit; habitual.

Habituation

The act of habituating, or accustoming; the state of being habituated.

Habitude

Habitual attitude; usual or accustomed state with reference to something else; established or usual relations.

Habitue

One who habitually frequents a place; as, an habitu/ of a theater.

Habitus

Habitude; mode of life; general appearance.

Hachure

A short line used in drawing and engraving, especially in shading and denoting different surfaces, as in map drawing. See Hatching.

Hacienda

A large estate where work of any kind is done, as agriculture, manufacturing, mining, or raising of animals; a cultivated farm, with a good house, in distinction from a farming establishment with rude huts for herdsmen, etc.; -- a word used in Spanish-American regions.

Hack

To be exposed or offered to common use for hire; to turn prostitute.

Hackamore

A halter consisting of a long leather or rope strap and headstall, -- used for leading or tieing a pack animal.

Hackberry

A genus of trees (Celtis) related to the elm, but bearing drupes with scanty, but often edible, pulp. Celtis occidentalis is common in the Eastern United States.

Hackbolt

The greater shearwater or hagdon. See Hagdon.

Hackee

The chipmunk; also, the chickaree or red squirrel.

Hackelia

A genus of plants with seeds that stick to clothing, including stickseed and some of the beggar's lice.

hacker

One who, or that which, hacks. A cutting instrument for making notches; esp., one used for notching pine trees in collecting turpentine; a hack.

hackery

A cart with wooden wheels, drawn by bullocks.

hackie

The driver of a taxicab; a hackman.

Hackle

To separate, as the coarse part of flax or hemp from the fine, by drawing it through the teeth of a hackle or hatchel.

Hackly

Rough or broken, as if hacked.

Hackman

The driver of a hack or carriage for public hire.

Hackmatack

The American larch (Larix Americana), a coniferous tree with slender deciduous leaves; also, its heavy, close-grained timber. Called also tamarack.

Hackney

To devote to common or frequent use, as a horse or carriage; to wear out in common service; to make trite or commonplace; as, a hackneyed metaphor or quotation.

Hackneyman

A man who lets horses and carriages for hire.

Hackster

A bully; a bravo; a ruffian; an assassin.

Haddock

A marine food fish (Melanogrammus aeglefinus), allied to the cod, inhabiting the northern coasts of Europe and America. It has a dark lateral line and a black spot on each side of the body, just back of the gills. Galled also haddie, and dickie.

Hade

To deviate from the vertical; -- said of a vein, fault, or lode.

Hades

The nether world (according to classical mythology, the abode of the shades, ruled over by Hades or Pluto); the invisible world; the grave.

Hadj

The pilgrimage to Mecca, performed by Muslims. It is the duty of Moslems to make a journey to Mecca at least once ina lifetime, or if that is not possible, three journeys to one of the alternate sacred sites.

Hadji

A Muslim who has made a pilgrimage to Mecca; -- used among Orientals as a respectful salutation or a title of honor.

hadron

any elementary particle that interacts strongly with other particles.

hadrosaur

Any member of the genus Hadrosaurus or family Hadrosauridae, an extinct family of heavy bipedal partly aquatic dinosaurs with duck-billed skull and webbed feet; of the Upper Cretaceous in North America.

Hadrosauridae

A natural family of extinct reptiles including the duck-billed dinosaurs.

Hadrosaurus

An American herbivorous dinosaur of great size, allied to the iguanodon. It is found in the Cretaceous formation.

Haemacyanin

A substance found in the blood of the octopus, which gives to it its blue color.

Haemacytometer

An apparatus for determining the number of corpuscles in a given quantity of blood.

Haemad

Toward the haemal side; on the haemal side of; -- opposed to neurad.

Haemal

Pertaining to the blood or blood vessels; also, ventral. See Hemal.

Haemaphaein

A brownish substance sometimes found in the blood, in cases of jaundice.

Haemapodous

Having the limbs on, or directed toward, the ventral or hemal side, as in vertebrates; -- opposed to neuropodous.

Haemapoietic

Blood-forming; as, the haemapoietic function of the spleen.

Haematachometer

A form of apparatus (somewhat different from the hemadrometer) for measuring the velocity of the blood.

Haematic

Of or pertaining to the blood; sanguine; brownish red.

Haematitic

Of a blood-red color; crimson; (Bot.) brownish red.

Haematoblast

One of the very minute, disk-shaped bodies found in blood with the ordinary red corpuscles and white corpuscles; a third kind of blood corpuscle, supposed by some to be an early stage in the development of the red corpuscles; -- called also blood plaque, and blood plate.

Haematocrya

The cold-blooded vertebrates. Same as Hematocrya.

Haematogenesis

The origin and development of blood. The transformation of venous into arterial blood by respiration; hematosis.

Haematoin

A substance formed from the hematin of blood, by removal of the iron through the action of concentrated sulphuric acid. Two like bodies, called respectively haematoporphyrin and haematolin, are formed in a similar manner.

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