12-letter words containing t, y, r, o
- heterozygote — a hybrid containing genes for two unlike forms of a characteristic, and therefore not breeding true to type.
- heterozygous — having dissimilar pairs of genes for any hereditary characteristic.
- hidrocystoma — An adenoma of the sweat glands.
- high country — a mountainous area below the timberline; a forested mountain area.
- hill country — hilly area
- historically — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.
- historiology — (obsolete) a discourse on history.
- hoary marmot — a large marmot, Marmota caligata, living in mountainous areas of Siberia and northwestern North America and having a heavy, yellow-gray body, short black limbs, and black and white head and shoulders.
- holy picture — a picture of a person or thing that is of religious importance
- holy trinity — Trinity (def 1).
- home country — the country a person comes from
- homeotherapy — therapy for a disease by means of an agent that is similar to but not identical with the causative agent of the disease.
- hominy grits — grits (def 1).
- homoiothermy — having a body temperature that is relatively constant and mostly independent of the temperature of the environment; warm-blooded (opposed to poikilothermic).
- honor system — a system whereby the students at a school, the inmates in a prison, etc., are put on their honor to observe certain rules in order to minimize administrative supervision or to promote honesty.
- honorability — (American spelling) Alternative form of honourability.
- horizontally — at right angles to the vertical; parallel to level ground.
- horror story — a story, movie, etc., that entertains or fascinates by shocking or frightening, especially by an emphasis on bloodshed or supernatural forces.
- host country — nation staging an international event
- hyannis port — a town in SE Massachusetts, on Nantucket Sound: summer resort.
- hydatidiform — like or resembling a hydatid
- hydnocarpate — a salt or ester of hydnocarpic acid.
- hydrobromate — (chemistry) hydrobromide.
- hydroculture — A type of hydroponics in which plants are grown in a medium that allows the distribution of water and nutrients through capillary action.
- hydroelastic — undergoing a change in elasticity as a result of the flow of water or another fluid
- hydrogenated — to combine or treat with hydrogen, especially to add hydrogen to the molecule of (an unsaturated organic compound).
- hydrogenates — Third-person singular simple present indicative form of hydrogenate.
- hydrokinetic — pertaining to the motion of liquids.
- hydrologists — Plural form of hydrologist.
- hydrolysates — Plural form of hydrolysate.
- hydrometeors — Plural form of hydrometeor.
- hydronautics — (nautical) The science of the design and construction of ships, their engines, and their instrumentation.
- hydrophilite — a white mineral consisting of potassium and calcium
- hydrostatics — the branch of hydrodynamics that deals with the statics of fluids, usually confined to the equilibrium and pressure of liquids.
- 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).
- hydrotherapy — the branch of therapeutics that deals with the curative use of water.
- hydrothermal — noting or pertaining to the action of hot, aqueous solutions or gases within or on the surface of the earth.
- hydrotropism — oriented growth in response to water.
- hydroxylated — Simple past tense and past participle of hydroxylate.
- hydrozincite — a hydrous zinc carbonate, Zn 5 (CO 3) 2 (OH) 6 , an important ore of zinc in some localities.
- hygrochastic — of or relating to the opening of a fruit or flower caused by water or moisture
- hygrothermal — (physics) Of or pertaining to both humidity and temperature.
- hymenopteran — hymenopterous.
- hymenopteron — hymenopteran.
- hyperchaotic — Of or pertaining to hyperchaos.
- hypercoaster — Megacoaster.
- hypercorrect — overly correct; excessively fastidious; fussy: hypercorrect manners.
- hyperfiction — nonlinear fiction created in electronic hypertext form and containing multiple plot developments, endings, etc., that can be evoked interactively.
- hypermetropy — Dated form of hypermetropia.