12-letter words containing t, r, u, o
- ground alert — the state of waiting for orders in or near combat airplanes ready to take to the air at once.
- ground cloth — groundsheet.
- ground fault — the momentary, usually accidental, grounding of a conducting wire.
- ground frost — the condition resulting from a temperature reading of 0°C or below on a thermometer in contact with a grass surface
- ground plate — Electricity. a metal plate for making a ground connection to the earth.
- ground sloth — any of various extinct large, edentate mammals from the Pleistocene Epoch of North and South America resembling modern sloths but living on the ground rather than in trees.
- ground staff — The people who are paid to maintain a sports ground are called the ground staff.
- ground state — the state of least energy of a particle, as an atom, or of a system of particles.
- ground track — the path on the earth's surface below an aircraft, missile, rocket, or spacecraft.
- ground water — the water beneath the surface of the ground, consisting largely of surface water that has seeped down: the source of water in springs and wells.
- groundbursts — Plural form of groundburst.
- groundsheets — Plural form of groundsheet.
- groundstroke — A stroke played after the ball has bounced, as opposed to a volley.
- group of ten — the ten nations who met in Paris in 1961 to arrange the special drawing rights of the IMF: Belgium, Canada, France, Italy, Japan, Netherlands, Sweden, UK, US, and West Germany
- group theory — the branch of mathematics that deals with the structure of mathematical groups and mappings between them.
- growth curve — a curve on a graph in which a variable is plotted against time to illustrate the growth of the variable
- guest worker — a foreign worker permitted to work in a country, especially in Western Europe, on a temporary basis.
- gustave dore — (Paul) Gustave [pawl gy-stav] /pɔl güˈstav/ (Show IPA), 1832?–83, French painter, illustrator, and sculptor.
- gut reaction — instinctive response
- gutturonasal — articulated in the back of the mouth and given resonance in the nasal cavity, as the sound represented by (ng) in (ring).
- gynantherous — having the stamens converted into pistils by the action of frost, disease, or insects.
- hallucinator — One whose judgment and acts are affected by hallucinations; one who errs on account of his hallucinations.
- hard-mouthed — of or relating to a horse not sensitive to the pressure of a bit.
- harmoniumist — a person who plays a harmonium
- herpetofauna — the reptiles and amphibians that inhabit a given area
- 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
- heteroduplex — having polynucleotide strands derived from two different sources
- 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.
- high country — a mountainous area below the timberline; a forested mountain area.
- high-wrought — highly agitated; overwrought.
- hill country — hilly area
- hippocentaur — Centaur.
- hold out for — to wait patiently or uncompromisingly for (the fulfilment of one's demands)
- holothurians — Plural form of holothurian.
- holy picture — a picture of a person or thing that is of religious importance
- home country — the country a person comes from
- 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.
- honours list — annual list of persons given royal awards