12-letter words containing a, c, n, o
- gut of canso — Canso (def 2).
- gut reaction — instinctive response
- gymnocarpous — (of a fungus or lichen) having the apothecium open and attached to the surface of the thallus.
- gynaecocracy — Alternative form of gynecocracy.
- gynecomastia — abnormal enlargement of the breast in a male.
- gyromagnetic — of or relating to the magnetic properties of a rotating charged particle.
- haemodynamic — Alternative spelling of hemodynamic.
- haircoloring — dye or tint for the hair.
- halcyon days — period regarded with nostalgia
- half section — a part that is cut off or separated.
- half-section — a part that is cut off or separated.
- hallucinator — One whose judgment and acts are affected by hallucinations; one who errs on account of his hallucinations.
- hallucinogen — a substance that produces hallucinations.
- hallucinosis — a mental state characterized by repeated hallucinations.
- hamming code — (algorithm) Extra, redundant bits added to stored or transmitted data for the purposes of error detection and correction. Named after the mathematician Richard Hamming, Hamming codes greatly improve the reliability of data, e.g. from distant space probes, where it is impractical, because of the long transmission delay, to correct errors by requesting retransmission.
- hangchow bay — a bay of the East China Sea.
- hansom (cab) — a 19th-cent. two-wheeled covered carriage for two passengers, pulled by one horse: the driver's seat is above and behind the cab
- haricot bean — Haricot beans are small white beans that are eaten as a vegetable. They are often sold dried rather than fresh.
- harmonic law — any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas) or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet's orbit (harmonic law)
- harmonically — pertaining to harmony, as distinguished from melody and rhythm.
- harmonichord — a musical instrument resembling an upright piano intended to fuse the sound of a violin with the functionality of a piano, the tone therefore produced using friction rather than through striking
- have company — If you have company, you have a visitor or friend with you.
- hells canyon — a canyon on the Snake River in S Idaho and along the Oregon border: 125 miles (210 km) long with a maximum depth of about 7900 feet (2408 meters).
- hemodynamics — the branch of physiology dealing with the forces involved in the circulation of the blood.
- henceforward — from now on; from this point forward.
- hendecagonal — (geometry) Having eleven sides an angles; similar to a hendecagon.
- hexacarbonyl — (inorganic chemistry) Any compound having six carbonyl groups.
- hexacosanoic — as in hexacosanoic acid
- hexadecanoic — Of or pertaining to hexadecanoic acid or its derivatives.
- hierophantic — (in ancient Greece) an official expounder of rites of worship and sacrifice.
- high command — the leadership or highest authority of a military command or other organization.
- hippocentaur — Centaur.
- hippocrepian — (of an aquatic organism or plant) shaped like a horseshoe
- hire company — a company that hires things out to people
- histrionical — (British) Alternative form of histrionic.
- hoisin sauce — a thick, sweet, spicy condiment containing soybeans, sugar, garlic, and chili peppers, used in cooking or as an accompaniment to meat, fish, or poultry, especially Peking duck.
- holocephalan — (zoology) Any cartilaginous fish of the subclass Holocephali; the chimeras.
- home machine — 1. Synonym home box. 2. The machine that receives your e-mail. These senses might be distinct, for example, for a hacker who owns one computer at home, but reads e-mail at work.
- homoromantic — Romantically attracted to those of the same gender.
- horn balance — an extension of an aircraft control surface that projects in front of the hinge providing aerodynamic assistance in moving the control
- horse racing — a contest of speed among horses that either are ridden by jockeys or pull sulkies and their drivers.
- housecleaner — Someone employed to clean a house.
- hovering act — an act forbidding or restricting the loitering of foreign or domestic vessels within the prescribed limits of a coastal nation.
- huffman code — Huffman coding
- human comedy — French La Comédie Humaine. a collected edition of tales and novels in 17 volumes (1842–48) by Honoré de Balzac.
- humification — the formation of humus.
- hydnocarpate — a salt or ester of hydnocarpic acid.
- hydrocarbons — any of a class of compounds containing only hydrogen and carbon, as an alkane, methane, CH 4 , an alkene, ethylene, C 2 H 4 , an alkyne, acetylene, C 2 H 2 , or an aromatic compound, benzene, C 6 H 6 .
- hydrodynamic — pertaining to forces in or motions of liquids.
- hydronautics — (nautical) The science of the design and construction of ships, their engines, and their instrumentation.