12-letter words containing o, a, h, u
- hazel grouse — a European woodland grouse, Tetrastes bonasia, somewhat resembling the North American ruffed grouse.
- hazelnut oil — an oil extracted from hazelnuts and used mostly in cooking
- heliogabalus — (Varius Avitus Bassianus"Marcus Aurelius Antoninus") a.d. 204–222, Roman emperor 218–222.
- heliogravure — photoengraving.
- hellaciously — In a hellacious manner.
- hematogenous — originating in the blood.
- hepatogenous — originating in the liver
- herpetofauna — the reptiles and amphibians that inhabit a given area
- heterogamous — Genetics. having unlike gametes, or reproducing by the union of such gametes (opposed to isogamous).
- heteroousian — a person who believes the Father and the Son to be unlike in substance or essence; an Arian (opposed to Homoousian).
- heterosexual — of, relating to, or exhibiting heterosexuality.
- hexafluoride — a fluoride containing six atoms of fluorine.
- hippocentaur — Centaur.
- hippophagous — eating horse meat
- hippopotamus — a large herbivorous mammal, Hippopotamus amphibius, having a thick hairless body, short legs, and a large head and muzzle, found in and near the rivers, lakes, etc., of Africa, and able to remain under water for a considerable time.
- hit (out) at — to aim a blow at; try to hit
- hohenstaufen — a member of the royal family that ruled in Germany from 1138 to 1208 and from 1215 to 1254, and in Sicily from 1194 to 1266.
- 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.
- holothurians — Plural form of holothurian.
- homodynamous — (biology) Pertaining to, or involving, homodynamy.
- homologumena — the books in the New Testament generally held as authoritative and canonical by the early church.
- homosexually — In a homosexual way.
- horse around — a large, solid-hoofed, herbivorous quadruped, Equus caballus, domesticated since prehistoric times, bred in a number of varieties, and used for carrying or pulling loads, for riding, and for racing.
- horse guards — the mounted squadrons supplied by the Household Cavalry for ceremonial duties
- horse manure — horse's excrement
- house arrest — confinement of an arrested person to his or her residence or to a public place, as a hospital, instead of in a jail: He was under house arrest until the day of his trial.
- house league — a sports league in which the members of all teams belong to the same organization, school, or company
- house martin — a small European swallow, Delichon urbica, that builds its nest under the eaves of houses.
- house wizard — (Probably from ad-agency tradetalk, "house freak") A hacker occupying a technical-specialist, R&D, or systems position at a commercial shop. A really effective house wizard can have influence out of all proportion to his/her ostensible rank and still not have to wear a suit. Used especially of Unix wizards. The term "house guru" is equivalent.
- housebreaker — a person who breaks into and enters a house with a felonious intent.
- housecleaner — Someone employed to clean a house.
- housefathers — Plural form of housefather.
- househusband — a man whose spouse works and who stays home to manage their household.
- housemasters — Plural form of housemaster.
- housepainter — A professional painter of houses.
- housetrained — Simple past tense and past participle of housetrain.
- housewarming — a party to celebrate a person's or family's move to a new home.
- how are you? — what is your state of health?
- how dare you — You say 'how dare you' when you are very shocked and angry about something that someone has done.
- hua guo feng — 1921–2008, Chinese Communist statesman; prime minister of China 1976–80
- 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.
- human genome — genetic code of human beings
- humanisation — Alternative form of humanization.
- humanization — to make humane, kind, or gentle.
- humboldt bay — an inlet of the Pacific Ocean in NW California.
- humification — the formation of humus.
- humiliations — Plural form of humiliation.
- hydromedusae — Irregular plural form of hydromedusa.
- hydronautics — (nautical) The science of the design and construction of ships, their engines, and their instrumentation.