14-letter words starting with h
- heat conductor — a material or device that conducts heat
- heat exchanger — a device for transferring the heat of one substance to another, as from the exhaust gases to the incoming air in a regenerative furnace.
- heat lightning — lightning too distant for thunder to be heard, observed as diffuse flashes near the horizon on summer evenings.
- heat of fusion — the heat absorbed by a unit mass of a given solid at its melting point that completely converts the solid to a liquid at the same temperature: equal to the heat of solidification.
- heat reservoir — a hypothetical body of infinitely large mass capable of absorbing or rejecting unlimited quantities of heat without undergoing appreciable changes in temperature, pressure, or density.
- heat-resistant — able to resist and remain unaffected by heat
- heat-sensitive — responding to heat or to changes in temperature
- heath robinson — (of a mechanical device) absurdly complicated in design and having a simple function
- heating system — a system that provides heat to a building or number of buildings
- heaven help sb — You say 'Heaven help someone' when you are worried that something bad is going to happen to them, often because you disapprove of what they are doing or the way they are behaving.
- heavy breather — a person who breathes stertorously or with difficulty
- heavy hydrogen — either of the heavy isotopes of hydrogen, especially deuterium.
- heavy industry — bulk materials manufacturing
- heavy nitrogen — the stable isotope of nitrogen having a mass number of 15.
- heavy wizardry — Code or designs that trade on a particularly intimate knowledge or experience of a particular operating system or language or complex application interface. Distinguished from deep magic, which trades more on arcane *theoretical* knowledge. Writing device drivers is heavy wizardry; so is interfacing to X (sense 2) without a toolkit. Especially found in source-code comments of the form "Heavy wizardry begins here". Compare voodoo programming.
- hebetudinosity — mental dullness; insipidity
- hebrew-aramaic — a mixture of Hebrew and Jewish Aramaic
- hedge clippers — clippers or shears used to trim hedges
- hedgehog gourd — a prickly-stemmed Arabian vine, Cucumis dipsaceus, of the gourd family, having burlike, bristly fruit.
- hedonistically — a person whose life is devoted to the pursuit of pleasure and self-gratification.
- heebie-jeebies — a condition of extreme nervousness caused by fear, worry, strain, etc.; the jitters; the willies (usually preceded by the): Just thinking about ghosts gives me the heebie-jeebies.
- heidelberg jaw — a human lower jaw of early middle Pleistocene age found in 1907 near Heidelberg, Germany.
- heidelberg man — the primitive human being reconstructed from the Heidelberg jaw.
- height of land — a watershed
- heiligenschein — a ring of light around the shadow cast by a person's head, especially on a dewy, sunlit lawn, caused by reflection and diffraction of light rays; halo.
- helicopter dad — a style of child rearing in which an overprotective mother or father discourages a child's independence by being too involved in the child's life: In typical helicopter parenting, a mother or father swoops in at any sign of challenge or discomfort.
- helicopter mom — a style of child rearing in which an overprotective mother or father discourages a child's independence by being too involved in the child's life: In typical helicopter parenting, a mother or father swoops in at any sign of challenge or discomfort.
- helicopter pad — landing area
- heliocentrical — Alternative form of heliocentric.
- heliosciophyte — any plant that grows in the shade, but thrives more in the sun
- helium balloon — a balloon that is filled with helium and rises up into the air if not held
- hell on wheels — the place or state of punishment of the wicked after death; the abode of evil and condemned spirits; Gehenna or Tartarus.
- hell's kitchen — (in New York City) a section of midtown Manhattan, west of Times Square, formerly notorious for its slums and high crime rate.
- hellaciousness — Quality of being hellacious.
- hello, sailor! — (jargon) Occasional West Coast equivalent of hello, world; seems to have originated at SAIL, later associated with the game Zork (which also included "hello, aviator" and "hello, implementor"). Originally from the traditional hooker's greeting to a swabbie fresh off the boat, of course.
- helminthologic — of or pertaining to helminthology
- helter-skelter — in headlong and disorderly haste: The children ran helter-skelter all over the house.
- hemagglutinate — to cause the clumping of red blood cells in
- hemerocallises — Plural form of hemerocallis.
- hemicelluloses — Plural form of hemicellulose.
- hemimetabolism — incomplete metamorphosis.
- hemimetabolous — incomplete metamorphosis.
- hemingwayesque — of, relating to, or characteristic of Ernest Hemingway or his works.
- hemipelvectomy — (surgery) The surgical removal of half of the pelvis, and the leg on that side.
- hemlock looper — the larva of a geometrid moth, Lambdina fiscellaria, common in some areas of North America and a serious pest of various trees, as hemlock, Douglas fir, balsam spruce, and oak.
- hemoflagellate — a flagellate protozoan, especially of the genera Trypanosoma and Leishmania, that is parasitic in the blood.
- hemoglobinuria — the presence of hemoglobin pigment in the urine.
- hendersonville — a city in S Tennessee.
- henry bessemer — Sir Henry, 1813–98, English engineer: inventor of the Bessemer process.
- henry j kaiser — Henry J(ohn) 1882–1967, U.S. industrialist.