12-letter words containing o, t, s, u
- harmoniumist — a person who plays a harmonium
- haute-savoie — a department in E France. 1775 sq. mi. (4595 sq. km). Capital: Annecy.
- hebetudinous — the state of being dull; lethargy.
- hectocotylus — a modified arm of the male of certain cephalopods that is used to transfer sperm to the female.
- hellespontus — an area in the southern hemisphere of Mars.
- hematogenous — originating in the blood.
- hepatogenous — originating in the liver
- herstmonceux — a village in S England, in E Sussex north of Eastbourne: 15th-century castle, site of the Royal Observatory, which was transferred from Greenwich between 1948 and 1958, until 1990
- heteroecious — the development of different stages of a parasitic species on different host plants.
- heterogamous — Genetics. having unlike gametes, or reproducing by the union of such gametes (opposed to isogamous).
- heterogenous — having its source or origin outside the organism; having a foreign origin.
- heterogonous — Botany. of or relating to monoclinous flowers of two or more kinds occurring on different individuals of the same species, the kinds differing in the relative length of stamens and pistils (opposed to homogonous).
- heterogynous — having females of two different kinds, one sexual and the other abortive or neuter, as ants.
- heterologous — Biology. of different origin; pertaining to heterology.
- heteromerous — having or consisting of parts that differ in quality, number of elements, or the like: a heteromerous flower.
- heteronomous — subject to or involving different laws.
- heteronymous — of, relating to, or characteristic of a heteronym.
- 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.
- heterozygous — having dissimilar pairs of genes for any hereditary characteristic.
- 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.
- 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.
- holopneustic — having all the spiracles open, as the tracheal systems of most insects.
- holothurians — Plural form of holothurian.
- homo erectus — an extinct species of the human lineage, formerly known as Pithecanthropus erectus, having upright stature and a well-evolved postcranial skeleton, but with a smallish brain, low forehead, and protruding face.
- homothermous — (biology) warm-blooded.
- honest injun — honestly (used to emphasize the truth of a statement).
- honey locust — a thorny North American tree, Gleditsia triacanthos, of the legume family, having small, compound leaves and pods with a sweet pulp.
- honours list — annual list of persons given royal awards
- host country — nation staging an international event
- 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 doctor — a resident physician in a hospital, hotel, or other public institution.
- house hunter — a person who house-hunts
- house lights — lights of a residential building
- house martin — a small European swallow, Delichon urbica, that builds its nest under the eaves of houses.
- housefathers — Plural form of housefather.
- housemasters — Plural form of housemaster.
- housemothers — Plural form of housemother.
- housepainter — A professional painter of houses.
- housetrained — Simple past tense and past participle of housetrain.
- housing list — a list of people waiting to obtain council houses
- humanisation — Alternative form of humanization.
- humiliations — Plural form of humiliation.
- hunting dogs — the constellation Canes Venatici.
- hydronautics — (nautical) The science of the design and construction of ships, their engines, and their instrumentation.
- hydrosulfate — a salt formed by the direct union of sulfuric acid with an organic base, especially an alkaloid, and usually more soluble than the base.
- hydrosulfite — hyposulfite (def 1).
- hypogastrium — the lower and median part of the abdomen.
- hypognathous — having the lower jaw or mandible longer than the upper.
- hyposulphate — a salt derived from hyposulphuric acid