18-letter words containing a, y, c
- grand canyon state — Arizona (used as a nickname).
- gravity escapement — an escapement, used especially in large outdoor clocks, in which the impulse is given to the pendulum by means of a weight falling through a certain distance.
- gyromagnetic ratio — the ratio of the magnetic moment of a rotating charged particle to its angular momentum.
- handyman's special — fixer-upper.
- heteroscedasticity — (statistics) The property of a series of random variables of 'not' every variable having the same finite variance.
- heteroskedasticity — Alternative spelling of heteroscedasticity.
- hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
- hidalgo y costilla — Miguel [mee-gel] /miˈgɛl/ (Show IPA), 1753–1811, Mexican priest, patriot, and revolutionist.
- highbush cranberry — a shrub, Viburnum trilobum, of northern North America, having broad clusters of white flowers and edible scarlet berries.
- histocompatibility — the condition of having antigenic similarities such that cells or tissues transplanted from one (the donor) to another (the recipient) are not rejected.
- historical geology — the branch of geology dealing with the history of the earth.
- honeysuckle family — the plant family Caprifoliaceae, typified by shrubs and woody vines having opposite leaves, clusters of usually flaring, narrow, tubular flowers, and various types of fruit, and including the elder, honeysuckle, snowberry, twinflower, and viburnum.
- honorary secretary — a unpaid person who is one of the managers of an organization
- hot-water cylinder — a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system
- hydrocinnamic acid — a white crystalline compound, C 9 H 10 O 2 , with a floral odor, used in perfumes and flavoring.
- hydrofluorocarbons — Plural form of hydrofluorocarbon.
- hydroxyacetic acid — glycolic acid.
- hyper-intellectual — appealing to or engaging the intellect: intellectual pursuits.
- hyper-metaphorical — a figure of speech in which a term or phrase is applied to something to which it is not literally applicable in order to suggest a resemblance, as in “A mighty fortress is our God.”. Compare mixed metaphor, simile (def 1).
- hyperbaric chamber — a steel vessel in which atmospheric pressure can be raised or lowered by air compressors, used to treat divers or pilots afflicted with aeroembolism and to provide high-oxygen environments for certain medical treatments and operations.
- hypercholesteremia — Alternative spelling of hypercholesteraemia.
- hyperconcentration — the act of concentrating; the state of being concentrated.
- hypernationalistic — a person devoted to nationalism.
- hypochromic anemia — an anemia characterized by an abnormally low concentration of hemoglobin in the red blood cells, often due to iron deficiency.
- hypogastric artery — iliac artery (def 3).
- hyposulfurous acid — an acid, H 2 S 2 O 4 , next in a series below sulfurous acid, known only in solution or in the form of its salts.
- hysterical reasons — (Or "hysterical raisins") A variant on the stock phrase "for historical reasons", indicating specifically that something must be done in some stupid way for backward compatibility, and moreover that the feature it must be compatible with was the result of a bad design in the first place. "All IBM PC video adaptors have to support MDA text mode for hysterical reasons." Compare bug-for-bug compatible.
- immunopharmacology — the branch of pharmacology concerned with the immune system
- in company with sb — If you feel, believe, or know something in company with someone else, you both feel, believe, or know it.
- incapacity benefit — (in Britain) a regular government payment made to people who are unable to work for an extended period through disability
- incommensurability — not commensurable; having no common basis, measure, or standard of comparison.
- inconsequentiality — of little or no importance; insignificant; trivial.
- indiscriminatingly — In an indiscriminating manner.
- indolebutyric acid — a white or yellowish, crystalline, water-insoluble powder, C 12 H 13 O 2 N, a plant hormone similar to indoleacetic acid and used for the same purposes.
- interchangeability — (of two things) capable of being put or used in the place of each other: interchangeable symbols.
- interface analysis — (testing) A software test which checks the interfaces between program elements for consistency and adherence to predefined rules or axioms.
- investment company — a company that invests its funds in other companies and issues its own securities against these investments.
- involuntary muscle — muscle: contracts involuntarily
- isoamyl salicylate — a colorless, sometimes slightly yellow, synthetic oil, C 12 H 16 O 3 , having an orchidlike odor: used in perfumery.
- johnny-come-lately — a late arrival or participant; newcomer: the Johnny-come-latelies producing space-war films after the trend had ended.
- kentucky bluegrass — a grass, Poa pratensis, of the Mississippi valley, used for pasturage and lawns.
- launching ceremony — a ceremony that celebrates the launch of a ship for the first time into the water
- lifecycle analysis — Lifecycle analysis is the consideration of all the energy and materials that are needed to make a product and to dispose of it.
- lincoln's birthday — February 12, a legal holiday in some states of the U.S., in honor of the birth of Abraham Lincoln.
- lipopolysaccharide — any of a class of polysaccharides to which lipids are attached.
- literary criticism — study and review of literature
- locally finite set — a collection of sets in a topological space in which each point of the space has a neighborhood that intersects a finite number of sets of the collection.
- logically possible — capable of being described without self-contradiction
- lonely hearts club — a club for people who are trying to find a lover or a friend
- long-stay car park — a car park (eg at an airport) where cars can be left for a long time