19-letter words containing a, c, h, e, r
- haul over the coals — a black or dark-brown combustible mineral substance consisting of carbonized vegetable matter, used as a fuel. Compare anthracite, bituminous coal, lignite.
- heavy-water reactor — a nuclear reactor that uses heavy water as moderator
- heel-and-toe racing — race walking.
- heinrich schliemann — Heinrich [hahyn-rikh] /ˈhaɪn rɪx/ (Show IPA), 1822–90, German archaeologist: excavated ancient cities of Troy and Mycenae.
- hepatic portal vein — a vein connecting two capillary networks in the liver
- heptachlorobiphenyl — (organic compound) Either of twenty-four isomers of the polychlorinated biphenyl containing seven chlorine atoms.
- hermetically sealed — airtight
- hermitian conjugate — adjoint (def 2).
- high-bush cranberry — cranberry bush
- highland clearances — in Scotland, the removal, often by force, of the people from some parts of the Highlands to make way for sheep, during the eighteenth and nineteenth centuries
- historic episcopate — the derivation of the episcopate of a Church in historic succession from the apostles
- honorable discharge — a discharge from military service of a person who has fulfilled obligations efficiently, honorably, and faithfully.
- horizontal encoding — (processor) An instruction set where each field (a bit or group of bits) in an instruction word controls some functional unit or gate directly, as opposed to vertical encoding where instruction fields are decoded (by hard-wired logic or microcode) to produce the control signals. Horizontal encoding allows all possible combinations of control signals (and therefore operations) to be expressed as instructions whereas vertical encoding uses a shorter instruction word but can only encode those combinations of operations built into the decoding logic. An instruction set may use a mixture of horizontal and vertical encoding within each instruction. Because an architecture using horizontal encoding typically requires more instruction word bits it is sometimes known as a very long instruction word (VLIW) architecture.
- household insurance — an arrangement in which you pay money to a company, and they pay money to you if your household goods are stolen or damaged
- human rights record — the facts that are known about the tendency of a country, regime, etc, to observe and protect human rights
- huntington's chorea — a hereditary disease of the central nervous system characterized by brain deterioration and loss of control over voluntary movements, the symptoms usually appearing in the fourth decade of life.
- hydrochlorothiazide — a crystalline, water-insoluble powder, C 7 H 8 ClN 3 O 4 S 2 , used as a diuretic and in the treatment of hypertension.
- hydrostatic balance — a balance for finding the weight of an object submerged in water in order to determine the upthrust on it and thus determine its relative density
- hydroxybenzoic acid — Hydroxybenzoic acid is the active ingredient in a number of drugs, for example, aspirin. Hydroxybenzoic acid is also used as a preservative.
- hyper-nationalistic — a person devoted to nationalism.
- hyperbolic cosecant — a hyperbolic function that is the reciprocal of hyperbolic sine
- hypercholesteraemia — (medicine) An abnormally high level of cholesterol in the blood.
- hyperfocal distance — the distance, at a given f number, between a camera lens and the nearest point (hyperfocal point) having satisfactory definition when focused at infinity.
- hypocholesterolemia — an abnormally low amount of cholesterol in the blood.
- in the catbird seat — If you say that someone is in the catbird seat, you think that their situation is very good.
- induction hardening — a process in which the outer surface of a metal component is rapidly heated by means of induced eddy currents. After rapid cooling the resulting phase transformations produce a hard wear-resistant skin
- indwelling catheter — a hollow tube left implanted in a body canal or organ, especially the bladder, to promote drainage.
- inorganic chemistry — the branch of chemistry dealing with inorganic compounds.
- interchangeableness — Quality of being interchangeable.
- interface architect — An interface builder for Motif distributed by Hewlett-Packard (see UIMX).
- intermediate school — a school for pupils in grades 4 through 6.
- international pitch — diapason normal pitch.
- internet relay chat — (chat, messaging) (IRC) /I-R-C/, occasionally /*rk/ A client-server chat system of large (often worldwide) networks. IRC is structured as networks of Internet servers, each accepting connections from client programs, one per user. The IRC community and the Usenet and MUD communities overlap to some extent, including both hackers and regular folks who have discovered the wonders of computer networks. Some Usenet jargon has been adopted on IRC, as have some conventions such as emoticons. There is also a vigorous native jargon (see the entry for "chat"). The largest and first IRC network is EFNet, with a smaller breakaway network called the Undernet having existed since 1992, and dozens of other networks having appeared (and sometimes disappeared) since. See also nick, bot, op.
- isenheim altarpiece — an altarpiece (1510?–15?) painted by Matthias Grünewald.
- jerusalem artichoke — Also called girasol. a sunflower, Helianthus tuberosus, having edible, tuberous, underground stems or rootstocks.
- job creation scheme — a governmental scheme to increase the number of jobs in an area, organization, etc
- karachai-cherkessia — a constituent republic of W Russia, on the N side of the Caucasus Mountains. Capital: Cherkessk. Pop: 439 700 (2002). Area: 14 100 sq km (5440 sq miles)
- king charles's head — a fixed idea; personal obsession
- landscape architect — A landscape architect is the same as a landscape gardener.
- lift the curtain on — to begin
- like a cheshire cat — If someone is grinning like a Cheshire cat or like the Cheshire cat, they are smiling very widely.
- lipopolysaccharides — Plural form of lipopolysaccharide.
- macaroni and cheese — pasta with cheese sauce
- machine instruction — (programming) The smallest element of a machine code program.
- machine translation — changing language of a text by computer
- magnetic hysteresis — hysteresis in a ferromagnetic material; the lag in the response of magnetic induction to changes of magnetic intensity.
- magnetic north pole — the point on Earth to where a compass needle points, and which is situated near the geographic North Pole. However, with time, the exact location can vary.
- magnetohydrodynamic — Of or pertaining to magnetohydrodynamics.
- major seventh chord — a chord much used in modern music, esp jazz and pop, consisting of a major triad with an added major seventh above the root
- malice aforethought — a predetermination to commit an unlawful act without just cause or provocation (applied chiefly to cases of first-degree murder).