| ACROPHONY | • acrophony n. The naming of letters in an alphabetic writing system using words whose initial sounds are represented… • ACROPHONY n. the use of a word starting with a letter of the alphabet as the name of the letter. |
| ANHYDROUS | • anhydrous adj. Having little or no water. • anhydrous adj. (Chemistry) Having no water of crystallization. • ANHYDROUS adj. destitute of water; as, anhydrous salts or acids. |
| DIACHRONY | • diachrony n. The study of change over time, especially changes to language. • DIACHRONY n. the historical development of a language etc. |
| GRAYHOUND | • grayhound n. (American spelling, uncommon) Alternative form of greyhound. • GRAYHOUND n. a tall slender fast-moving dog of an ancient breed originally used for coursing, also GREYHOUND. |
| HANDYWORK | • handywork n. Dated form of handiwork. • HANDYWORK n. work done by the hands or by direct personal agency, also HANDIWORK, HANDWORK. |
| HAWTHORNY | • hawthorny adj. Resembling hawthorns, hawthorn-like. • hawthorny adj. Of, or pertaining to, hawthorns. • hawthorny adj. Full of hawthorns. |
| HONEYTRAP | • honeytrap n. Alternative spelling of honey trap. • honey-trap n. Alternative form of honey trap. • honey␣trap n. (Idiomatic) The use of a romantic or a sexual relationship to entice a person into revealing secret information. |
| HONORABLY | • honorably adv. US standard spelling of honourably. • HONORABLE adv. (US) honourable, also HONOURABLE. |
| HONOURARY | • honourary adj. (US, UK) Archaic spelling of honorary. • HONOURARY adj. conferring honour, also HONORARY. |
| HOORAYING | • hooraying v. Present participle of hooray. • HOORAY v. to shout hooray, also HOORAH, HURRA, HURRAH, HURRAY. |
| HORNYHEAD | • hornyhead n. Any North American chubs of the genus Nocomis, especially Nocomis biguttatus. • HORNYHEAD n. a North American river chub. |
| HYDRATION | • hydration n. (Chemistry) The incorporation of water molecules into a complex with those of another compound. • hydration n. (Biology) The process of providing an adequate amount of water to body tissues. • hydration n. (Construction) The chemical reaction by which a substance (such as cement) combines with water, giving… |
| HYDRONAUT | • hydronaut n. An undersea explorer, such as a submariner. • HYDRONAUT n. a person trained to work in an underwater vessel. |
| HYDROVANE | • hydrovane n. A hydrofoil. • HYDROVANE n. a hydrofoil. |
| HYDROZOAN | • hydrozoan n. Any of many colonial coelenterates, of the class Hydrozoa, including the hydras, hydroids, hydrocorals… • HYDROZOAN n. any coelenterate of the class Hydrozoa, comprising organisms that are mostly marine and colonial with polyp and medusoid stages in the life cycle, also HYDROZOON. |
| HYPERNOVA | • hypernova n. (Astronomy) The gravitational collapse of a massive star to form a black hole. • HYPERNOVA n. an exploding star than produces even more energy and light than a supernova. |
| INHARMONY | • inharmony n. Lack of harmony. • INHARMONY n. want of harmony. |
| PHONATORY | • phonatory adj. Relating to phonation. • PHONATORY adj. relating to phonation, the production of vocal sound. |
| THYRATRON | • thyratron n. (Electronics) Any of several types of thermoelectric valve once used as a high-speed switch. • THYRATRON n. a gas-filled valve with a heated cathode, able to carry very high currents. |