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17-letter words containing a, c, h, i, l

  • hammer and sickle — the emblem of the Soviet Union, adopted in 1923 and consisting of an insignia of a hammer with its handle across the blade of a sickle and a star above.
  • hammered dulcimer — dulcimer (sense 1)
  • harmonic analysis — the calculation of Fourier series and their generalization.
  • harmonic interval — an intervening period of time: an interval of 50 years.
  • haroun-al-raschid — Harun al-Rashid.
  • heimlich maneuver — an emergency rescue procedure for application to someone choking on a foreign object, in which the rescuer places a fist between the victim's lower ribs or upper abdomen from behind and exerts sudden pressure in the form of thrusts of sufficient force to help eject the object from the windpipe.
  • helicopter parent — 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.
  • high-carbon steel — steel containing between 0.5 and 1.5 per cent carbon
  • hippocampal gyrus — a convolution on the inner surface of the temporal lobe of the cerebrum, bordering the hippocampus.
  • histamine blocker — any of various substances that act at a specific receptor site to block certain actions of histamine.
  • histopathological — the science dealing with the histological structure of abnormal or diseased tissue; pathological histology.
  • historical method — the process of establishing general facts and principles through attention to chronology and to the evolution or historical course of what is being studied.
  • historical school — a school of economists that arose in Germany in the 19th century in reaction to the principles of the classical economists, and that maintained that the factors making up an economy are variable and develop out of social institutions.
  • historiographical — the body of literature dealing with historical matters; histories collectively.
  • ho chi minh trail — a network of jungle paths winding from North Vietnam through Laos and Cambodia into South Vietnam, used as a military route by North Vietnam to supply the Vietcong during the Vietnam War.
  • hollandaise sauce — a sauce of egg yolks, butter, lemon juice, and seasonings.
  • homeland security — national defence
  • homovanillic acid — the end product of dopamine metabolism, C 9 H 10 O 4 , found in human urine.
  • horticulturalists — Plural form of horticulturalist.
  • hyaline cartilage — the typical, translucent form of cartilage, containing little fibrous tissue.
  • 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.
  • 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.
  • hyperintellectual — appealing to or engaging the intellect: intellectual pursuits.
  • 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.
  • ignoratio elenchi — the fallacy of offering proof irrelevant to the proposition in question.
  • indecipherability — Quality of being indecipherable.
  • independence hall — the building in Philadelphia where the Declaration of Independence was signed.
  • industrial school — a school for teaching one or more branches of industry; trade or vocational school.
  • integrated school — (in New Zealand) a private or church school that has joined the state school system
  • iontophoretically — By means of iontophoresis.
  • isomorphism class — (mathematics)   A collection of all the objects isomorphic to a given object. Talking about the isomorphism class (of a poset, say) ensures that we will only consider its properties as a poset, and will not consider other incidental properties it happens to have.
  • isopropyl alcohol — a colorless, flammable, water-soluble liquid, C 3 H 8 O, produced from propylene by the action of sulfuric acid and hydrolysis: used chiefly in the manufacture of antifreeze and rubbing alcohol and as a solvent.
  • joachim du bellay — Joachim [French zhaw-a-keem] /French ʒɔ aˈkim/ (Show IPA), Bellay, Joachim du.
  • julian of norwich — ?1342–?1413, English mystic and anchoress: best known for the Revelations of Divine Love describing her visions
  • kitchen appliance — a machine intended for use in the kitchen, such as a fridge or a food processor
  • ladder-back chair — a chair with a back of two upright posts connected by horizontal slats
  • lancashire heeler — a small sturdy dog of a breed with a short thick black or liver-coloured coat with tan markings, often used for herding cattle
  • law of trichotomy — the property that for natural numbers a and b , either a is less than b , a equals b , or a is greater than b .
  • lay it on (thick) — to exaggerate
  • lazy daisy stitch — an embroidery stitch consisting of a long chain stitch, usually used in making flower patterns
  • lexicographically — the writing, editing, or compiling of dictionaries.
  • light machine gun — any air-cooled machine gun having a caliber not greater than 0.30 inches (7.6 mm).
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