| ETHNOHISTORY | • ethnohistory n. The history of an indigenous people. • ETHNOHISTORY n. a study of the development of cultures. |
| HETEROCHRONY | • heterochrony n. (Biology) the variation in ontogeny of individuals of a species that gives rise to evolution. • HETEROCHRONY n. divergence from normal time sequence in development, also HETEROCHRONISM. |
| HETEROMORPHY | • heteromorphy n. (Biology) The state or quality of being heteromorphic; heteromorphism. • HETEROMORPHY n. dissimilarity in shape, structure, or magnitude. |
| HETEROTROPHY | • heterotrophy n. The state of being a heterotroph. • HETEROTROPHY n. the state of being a heterotroph, a secondary feeder eating plants or other animals. |
| HOMOIOTHERMY | • homoiothermy n. (Biology) Alternative form of homeothermy. • HOMOIOTHERMY n. the maintenance of a constant body temperature, also HOMEOTHERMISM, HOMEOTHERMY, HOMOTHERMY. |
| HYPOCHLORITE | • hypochlorite n. (Chemistry) any salt of hypochlorous acid; used as a household bleach. • HYPOCHLORITE n. a salt of hypochlorous acid. |
| HYPOSTROPHES | • hypostrophes n. Plural of hypostrophe. • HYPOSTROPHE n. a return to the primary argument after digression. |
| HYPOTHECATOR | • hypothecator n. (Law) One who hypothecates or pledges anything as security for the repayment of money borrowed. • HYPOTHECATOR n. one who hypothecates. |
| METHOXYCHLOR | • methoxychlor n. (Organic chemistry) A synthetic organochlorine used as an insecticide. • METHOXYCHLOR n. a relatively nontoxic organochlorine insecticide. |
| ORTHOCEPHALY | • orthocephaly n. The condition of being orthocephalic. • ORTHOCEPHALY n. the state of being orthocephalic. |
| PHOTOTHERAPY | • phototherapy n. The use of light to treat disorders of the skin, and certain mood disorders. • PHOTOTHERAPY n. the treatment of disease by light. |
| PHYTOCHROMES | • phytochromes n. Plural of phytochrome. • PHYTOCHROME n. a plant pigment which absorbs red or infrared rays and acts as an enzyme controlling growth. |
| PHYTOHORMONE | • phytohormone n. A plant hormone. • PHYTOHORMONE n. a plant hormone, regulating growth. |
| RHYTHMOPOEIA | • rhythmopoeia n. The art of composing rhythmically. • rhythmopœia n. Obsolete typography of rhythmopoeia. • RHYTHMOPOEIA n. the art of composing rhythmically. |
| THERMOCHROMY | • thermochromy n. The property possessed by heat of being composed, like light, of rays of different degrees of refrangibility… • THERMOCHROMY n. a phenomenon in which certain dyes made from liquid crystals change colour reversibly when their temperature is change, also THERMOCHROMISM. |