17-letter words containing a, r, y, i
- great grey shrike — the bird Lanius excubitor
- great rift valley — a series of rift valleys running from N to S, from the Jordan Valley in SW Asia to Mozambique in SE Africa.
- haematocrystallin — Alternative form of hematocrystallin.
- haemorrhoidectomy — surgical removal of haemorrhoids
- hairy-tailed mole — a blackish North American mole, Parascalops breweri, having a short, hairy tail.
- harmonic analysis — the calculation of Fourier series and their generalization.
- have a roving eye — to show a widespread amorous interest in the opposite sex
- heavy mineral oil — a colorless, oily, almost tasteless, water-insoluble liquid, usually of either a standard light density (light mineral oil) or a standard heavy density (heavy mineral oil) consisting of mixtures of hydrocarbons obtained from petroleum by distillation: used chiefly as a lubricant, in the manufacture of cosmetics, and in medicine as a laxative.
- heritage industry — an industry that manages the historical sites, buildings, and museums in a particular place, with the aim of encouraging tourism
- heteronormativity — The view that all human beings are either male or female, both in sex and in gender, and that sexual and romantic thoughts and relations are normal only when between people of different sexes.
- highways engineer — a civil engineer trained and specialized in the planning, construction, maintenance, etc of highways and roads
- hippocampal gyrus — a convolution on the inner surface of the temporal lobe of the cerebrum, bordering the hippocampus.
- holy roman empire — a Germanic empire located chiefly in central Europe that began with the coronation of Charlemagne as Roman emperor in a.d. 800 (or, according to some historians, with the coronation of Otto the Great, king of Germany, in a.d. 962) and ended with the renunciation of the Roman imperial title by Francis II in 1806, and was regarded theoretically as the continuation of the Western Empire and as the temporal form of a universal dominion whose spiritual head was the pope.
- homeland security — national defence
- hyaline cartilage — the typical, translucent form of cartilage, containing little fibrous tissue.
- hybrid fiber coax — (networking) (HFC) A kind of physical connection used in networks for audio, video, and data. DVB (Digital Video Broadcast) is used in Europe and DOCSIS is used in N America.
- hydraulic circuit — a circuit through which water or another liquid, instead of electric current, flows, but which otherwise operates in the same way as an electric circuit
- hydrochloric acid — a colorless or faintly yellow, corrosive, fuming liquid, HCl, used chiefly in chemical and industrial processes.
- hydroelectrically — Using hydroelectric power.
- hydrofluoric acid — a colorless, fuming, corrosive liquid, HF, an aqueous solution of hydrogen fluoride, used chiefly for etching glass.
- hydrogasification — a high-temperature, high-pressure process for producing liquid or gaseous fuels from fine particles of coal and hydrogen gas
- hydrotherapeutics — hydrotherapy.
- hydroxytryptamine — (organic compound) Any hydroxy derivative of tryptamine, but especially 5-hydroxytryptamine (serotonin).
- hyper-peristalsis — the progressive wave of contraction and relaxation of a tubular muscular system, especially the alimentary canal, by which the contents are forced through the system.
- hyperalimentation — overfeeding.
- hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
- hyperbolic spiral — rθ = a, (where a is a constant)
- hyperchlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
- hyperexcitability — an excessive reaction to stimuli.
- hyperinflationary — (economics) Having very high levels of inflation.
- hyperintellectual — appealing to or engaging the intellect: intellectual pursuits.
- hyperirritability — extreme irritability.
- hyperpigmentation — coloration, especially of the skin.
- hyperpolarisation — Alternative spelling of hyperpolarization.
- hyperpolarization — The act or process of hyperpolarizing.
- hypochlorous acid — a weak, unstable acid, HOCl, existing only in solution and in the form of its salts, used as a bleaching agent and disinfectant.
- hypocholesteremia — an abnormally low amount of cholesterol in the blood.
- hypochondriacally — In a hypochondriacal manner.
- hypophrygian mode — a plagal church mode represented on the white keys of a keyboard instrument by an ascending scale from B to B, with the final on E.
- i beg your pardon — You say 'Pardon?' or 'I beg your pardon?' or, in American English, 'Pardon me?' when you want someone to repeat what they have just said because you have not heard or understood it.
- ichthyosarcotoxin — a term applied to any poison found in the flesh of poisonous fishes.
- ideogrammatically — In terms of, or by means of, ideograms.
- idiosyncratically — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
- illinois waterway — a waterway system in N Illinois made up of canals and rivers connecting Lake Michigan in Chicago with the Mississippi River. 336 miles (541 km) long.
- illocutionary act — an act performed by a speaker by virtue of uttering certain words, as for example the acts of promising or of threatening
- imperialistically — In an imperialistic manner.
- implosion therapy — a form of behavior therapy involving intensive recollection and review of anxiety-producing situations or events in a patient's life in an attempt to develop more appropriate responses to similar situations in the future.
- implosive-therapy — a form of behavior therapy involving intensive recollection and review of anxiety-producing situations or events in a patient's life in an attempt to develop more appropriate responses to similar situations in the future.
- impressionability — easily impressed or influenced; susceptible: an impressionable youngster.
- improvisationally — In an improvisational way.