17-letter words containing i, o, n, a
- half-round chisel — a cold chisel with a semicircular cutting edge used for making narrow channels
- hall of residence — Halls of residence are buildings with rooms or flats, usually built by universities or colleges, in which students live during the term.
- hamiltonian cycle — Hamiltonian problem
- hanging committee — a group of people that selects and hangs works of art to exhibit
- hanging indention — an indention of uniform length at the beginning of each line except the first, which is flush left and of full width.
- 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.
- have a bearing on — If something has a bearing on a situation or event, it is relevant to it.
- have a reputation — to be known or notorious, esp for promiscuity, excessive drinking, or the like
- have a roving eye — to show a widespread amorous interest in the opposite sex
- have feelings for — to be emotionally or sexually attracted to
- have it in for sb — If someone has it in for you, they dislike you and try to cause problems for you.
- have on the brain — If someone has something on the brain, they keep thinking about it.
- hawking radiation — the emission of particles by a black hole. Pairs of virtual particles in the intense gravitational field around a black hole may live long enough for one to move outward when the other is pulled into the black hole, making it appear that the black hole is emitting radiation
- heat of formation — the heat evolved or absorbed when one mole of a compound is formed from its constituent atoms
- 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.
- 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.
- hemoconcentration — an increase in the concentration of cellular elements in the blood, resulting from loss of plasma.
- heptanedioic acid — pimelic acid.
- 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.
- hexacosanoic acid — cerotic acid.
- hexadecanoic acid — palmitic acid.
- high-carbon steel — steel containing between 0.5 and 1.5 per cent carbon
- hillel foundation — a national organization, founded in 1924 by the B'nai B'rith, that institutes and administers programs designed to enrich the religious, cultural, and social life of Jewish college students.
- histamine blocker — any of various substances that act at a specific receptor site to block certain actions of histamine.
- 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.
- hoare powerdomain — powerdomain
- hodgkin's disease — a type of cancer characterized by progressive chronic inflammation and enlargement of the lymph nodes of the neck, armpit, groin, and mesentery, by enlargement of the spleen and occasionally of the liver and the kidneys, and by lymphoid infiltration along the blood vessels.
- holding operation — a plan or procedure devised to prolong the existing situation
- hole in the heart — a defect of the heart in which there is an abnormal opening in any of the walls dividing the four heart chambers
- hollandaise sauce — a sauce of egg yolks, butter, lemon juice, and seasonings.
- hollerith, herman — Herman Hollerith
- 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
- homogentisic acid — an intermediate compound in the metabolism of tyrosine and of phenylalanine, found in excess in the blood and urine of persons affected with alkaptonuria.
- homovanillic acid — the end product of dopamine metabolism, C 9 H 10 O 4 , found in human urine.
- honorable mention — a citation conferred on a contestant, exhibit, etc., having exceptional merit though not winning a top honor or prize.
- hope against hope — the feeling that what is wanted can be had or that events will turn out for the best: to give up hope.
- horatio kitchener — Horatio Herbert (1st Earl Kitchener of Khartoum and of Broome) 1850–1916, English field marshal and statesman.
- hospital gangrene — Pathology. a contagious, often fatal gangrene, especially involving amputation stumps and war wounds, occurring usually in crowded, ill-kept hospitals, and caused by putrefactive bacteria.
- household ammonia — diluted ammonia, often having a small quantity of detergent, used in the home for cleaning.
- housekeeping cart — A housekeeping cart is a large metal basket on wheels which is used by a cleaner in a hotel to move clean bed linen, towels, and cleaning equipment.
- how the land lies — the prevailing conditions or state of affairs
- hungarian goulash — goulash (def 1).
- hydrogasification — a high-temperature, high-pressure process for producing liquid or gaseous fuels from fine particles of coal and hydrogen gas
- hydroxytryptamine — (organic compound) Any hydroxy derivative of tryptamine, but especially 5-hydroxytryptamine (serotonin).
- hyperalimentation — overfeeding.
- 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.