| BOROHYDRIDES | • borohydrides n. Plural of borohydride. • BOROHYDRIDE n. a compound of boron and hydrogen, used as a reducing agent. |
| CHLOROHYDRIN | • chlorohydrin n. (Organic chemistry) Any halohydrin in which the halogen is chlorine. • CHLOROHYDRIN n. any of various organic compounds derived from diols or polyhydroxy alcohols by substitution of chlorine for part of the hydroxyl groups. |
| CHLORPYRIFOS | • chlorpyrifos n. A crystalline organophosphate insecticide that inhibits acetylcholinesterase.[diethoxy-sulfanylidene-(3,5,6-trichloropy… |
| HYDROCHLORIC | • hydrochloric adj. (Chemistry) Of or relating to hydrochloric acid. • HYDROCHLORIC adj. applied to an acid composed of hydrogen and chlorine, hydrogen chloride, still sometimes called muriatic acid. |
| HYDROFLUORIC | • hydrofluoric adj. (Chemistry) Containing hydrogen and fluorine. • HYDROFLUORIC adj. as in hydrofluoric acid, a strong acid used for etching glass. |
| HYDROFORMING | • hydroforming n. (Engineering) A cost-effective way of shaping malleable metals into lightweight, stiff pieces by means… • hydroforming n. (Organic chemistry) The reaction of petroleum with hydrogen. • HYDROFORMING n. the catalytic reforming of petroleum to increase the proportion of aromatic and branched-chain hydrocarbons. |
| HYDROMORPHIC | • hydromorphic adj. Synonym of hydric (“requiring moisture”). • hydromorphic adj. (Soil science) Formed in the presence of an excess of water. • HYDROMORPHIC adj. developed in the presence of an excess of moisture which tends to suppress aerobic factors in soil-building. |
| HYDROTROPISM | • hydrotropism n. (Biology) The movement of a plant (or other organism) in response to water, either towards or away from water. • HYDROTROPISM n. growth in the direction of water. |
| PORPHYROPSIN | • porphyropsin n. Any of a group of purple carotenoid pigments, similar to rhodopsin, in the retinas of some fish. • PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin. |
| PROTOHISTORY | • protohistory n. The period between prehistory and history, during which a culture or civilization has not yet developed… • PROTOHISTORY n. the study of human beings in the times that immediately antedate recorded history. |
| PYRITOHEDRON | • pyritohedron n. (Mathematics) An irregular dodecahedron, the faces of which are identical but irregular pentagons. • pyritohedron n. (Mineralogy) The shape of one of the crystal habits of pyrite. • PYRITOHEDRON n. a pentagonal dodecahedron. |
| PYROMORPHITE | • pyromorphite n. (Mineralogy) A yellowish-green mineral, a mixed phosphate and chloride of lead with the chemical formula… • PYROMORPHITE n. a green, brown, or yellow lead ore. |
| THYROTROPHIC | • thyrotrophic adj. That stimulates the thyroid gland. • thyrotrophic adj. Of or pertaining to thyrotropism. • THYROTROPHIC adj. exerting or characterized by a direct influence on the secretory activity of the thyroid gland, also THYROTROPIC. |
| THYROTROPHIN | • thyrotrophin n. Alternative form of thyrotropin. • THYROTROPHIN n. a hormone, produced in the anterior lobe of the pituitary gland, which stimulates the thyroid, also THYROTROPIN. |
| THYROTROPINS | • thyrotropins n. Plural of thyrotropin. • THYROTROPIN n. a hormone, produced in the anterior lobe of the pituitary gland, which stimulates the thyroid, also THYROTROPHIN. |