17-letter words containing h, e, n, l, y
- henry cabot lodge — Henry Cabot, 1850–1924, U.S. public servant and author: senator 1893–1924.
- henry of portugal — ("the Navigator") 1394–1460, prince of Portugal: sponsor of geographic explorations.
- 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
- hurler's syndrome — a medical condition characterized by physical deformity and mental deficiency
- huygens principle — the principle that all points on a wave front of light are sources of secondary waves and that surfaces tangential to these waves define the position of the wave front at any point in time.
- hyaline cartilage — the typical, translucent form of cartilage, containing little fibrous tissue.
- hydrogen chloride — a colorless gas, HCl, having a pungent odor: the anhydride of hydrochloric acid.
- hydrogen fluoride — a colorless corrosive gas, HF, the anhydride of hydrofluoric acid, used chiefly as a catalyst and in the fluorination of hydrocarbons.
- hydrogen sulphide — Chemistry
- hydrothermal vent — an opening on the floor of the sea from which hot, mineral-rich solutions issue. Compare vent1 (def 2).
- hyper-intelligent — having good understanding or a high mental capacity; quick to comprehend, as persons or animals: an intelligent student.
- hyperalimentation — overfeeding.
- hyperbolic cosine — one of a group of functions of an angle expressed as a relationship between the distances of a point on a hyperbola to the origin and to the coordinate axes; cosh
- hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
- hyperchlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
- hyperinflationary — (economics) Having very high levels of inflation.
- hyperintellectual — appealing to or engaging the intellect: intellectual pursuits.
- hyperpolarisation — Alternative spelling of hyperpolarization.
- hyperpolarization — The act or process of hyperpolarizing.
- hypodermic needle — a hollow needle used to inject solutions subcutaneously.
- hypoglossal nerve — either one of the twelfth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the tongue.
- 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.
- in the family way — a basic social unit consisting of parents and their children, considered as a group, whether dwelling together or not: the traditional family. a social unit consisting of one or more adults together with the children they care for: a single-parent family.
- in the public eye — featured prominently in the media
- incomprehensively — In an incomprehensive manner.
- indecipherability — Quality of being indecipherable.
- iontophoretically — By means of iontophoresis.
- italian greyhound — one of an Italian breed of toy dogs resembling a greyhound.
- lady of the night — a tropical American shrub, Brunfelsia americana, of the nightshade family, having berrylike yellow fruit and fragrant white flowers.
- lady-of-the-night — a tropical American shrub, Brunfelsia americana, of the nightshade family, having berrylike yellow fruit and fragrant white flowers.
- laryngopharyngeal — of, relating to, or involving the larynx and pharynx.
- lymphadenopathies — Plural form of lymphadenopathy.
- methyl isocyanate — Chemistry. a highly toxic, flammable, colorless liquid, CH 3 NCO, used as an intermediate in the manufacture of pesticides: in 1984, the accidental release of a cloud of this gas in Bhopal, India, killed more than 1700 people and injured over 200,000.
- methylidyne group — the trivalent group ≡CH.
- methylnaphthalene — a compound, C 1 1 H 1 0 , whose alpha isomer, a colorless liquid, is used in determining cetane numbers.
- methyltheobromine — caffeine.
- methyltransferase — any of a class of enzymes that catalyze the transfer of methyl groups from one molecule to another.
- miss lonelyhearts — a novel (1933) by Nathanael West.
- monarch butterfly — a large, deep-orange butterfly, Danaus plexippus, having black and white markings, the larvae of which feed on the leaves of milkweed.
- more than usually — You use more than usually to show that something shows even more of a particular quality than it normally does.
- negative theology — a theological approach or tradition in which the nature of God is thought to be unknowable and is only understood through negative statements. See also apophasis (def 2).
- nephelometrically — By means of nephelometry.
- neuropharmacology — the branch of pharmacology concerned with the effects of drugs on the nervous system.
- neurophysiologist — the branch of physiology dealing with the functions of the nervous system.
- neuropsychologist — A neurologist or psychologist whose speciality is neuropsychology.
- nightshade family — the plant family Solanaceae, characterized by herbaceous plants, trees, shrubs, and vines having alternate, simple or pinnate leaves, conspicuous flowers, and fruit in the form of a berry or capsule, and including belladonna, eggplant, nightshade, peppers of the genus Capsicum, petunia, potato, tobacco, and tomato.
- nuclear chemistry — the branch of chemistry concerned with nuclear reactions
- oceanographically — In terms of oceanography.
- once over lightly — a hasty or superficial treatment, look, examination, etc.; once-over: The maid gave the room the once-over-lightly.