| BRYOLOGY | • bryology n. (Botany) The study of bryophytes (non-vascular plants including mosses, liverworts and hornworts). • BRYOLOGY n. the study of mosses. |
| CRYOGENY | • cryogeny n. (Dated) cryogenics. • CRYOGENY n. a branch of physics. |
| GYRATORY | • gyratory adj. Moving in a circle, or spirally; revolving; whirling around. • gyratory n. (UK) A large traffic roundabout with non-standard lane markings or priorities, or with buildings on… • GYRATORY adj. moving in a circle or spiral. |
| GYRODYNE | • gyrodyne n. A kind of VTOL aircraft with a helicopter rotor-like system driven by its engine for takeoff and landing… • GYRODYNE n. a rotorcraft in which the rotors are powered only for takeoff and landing, not for cruising flight. |
| HYDROPSY | • hydropsy n. (Dated) Edema, dropsy. • HYDROPSY n. (archaic) dropsy, also HYDROPS. |
| HYDROXYL | • hydroxyl n. (Chemistry) A univalent radical or functional group (–OH) in organic chemistry; present in alcohols… • HYDROXYL n. the group containing oxygen and hydrogen. |
| MERONYMY | • meronymy n. (Semantics) The relationship of being a constituent part or member of something; a system of meronyms. • MERONYMY n. the state of being a meronym, a word whose relation to another is that of a part to the whole. |
| PARONYMY | • paronymy n. The quality of being paronymous. • paronymy n. The use of paronymous words. • PARONYMY n. a relationship of two words having the same sound. |
| POLYMERY | • polymery n. (Chemistry) The condition of being polymeric. • POLYMERY n. in botany, the condition of having many parts. |
| POLYPARY | • polypary n. Polyparium. • POLYPARY n. the common supporting structure of a polyp colony. |
| PORPHYRY | • porphyry n. (Geology) a hard igneous rock consisting of large crystals in a fine-grained matrix. • Porphyry prop.n. A Tyrian Neoplatonic philosopher. • PORPHYRY n. (Greek) a very hard, variegated rock of a purple and white colour, used in sculpture. |
| PYROLOGY | • pyrology n. (Dated) the scientific study of the effects of heat or flame, often in regards to explosives or chemical compounds. • PYROLOGY n. the scientific examination of materials by heat. |
| PYROLYSE | • pyrolyse v. (Intransitive, chemistry) To undergo pyrolysis. • pyrolyse v. (Transitive, chemistry) To decompose or transform a substance by subjecting it to heat. • PYROLYSE v. to decompose by heating, also PYROLIZE, PYROLISE, PYROLYZE. |
| PYROLYZE | • pyrolyze v. US spelling of pyrolyse. • PYROLYZE v. to decompose by heating, also PYROLISE, PYROLIZE, PYROLYSE. |
| PYROXYLE | • pyroxyle n. Archaic form of pyroxylin. • PYROXYLE n. a nitrocellulose. |
| YEOMANRY | • yeomanry n. (Historical) A class of small freeholders who cultivated their own land. • yeomanry n. A British volunteer cavalry force organized in 1761 for home defense and later incorporated into the Territorial Army. • YEOMANRY n. a collective body of yeomen. |
| YONDERLY | • yonderly adj. (UK, dialect, obsolete) anxious; absent-minded; vacant. • YONDERLY adj. (dialect) mentally or emotionally distant; absentminded. |