| AZYGOSPORES | • azygospores n. Plural of azygospore. • AZYGOSPORE n. a thick-walled spore produced by parthenogenesis in certain algae and fungi. |
| GYROCOPTERS | • gyrocopters n. Plural of gyrocopter. • GYROCOPTER n. an airplane balanced and supported by the aerodynamic forces acting on rapidly rotating horizontal or slightly inclined airfoils, also GYROPLANE. |
| HYGROPHOBES | • HYGROPHOBE n. a plant growing best where moisture is scanty. |
| HYGROSCOPES | • hygroscopes n. Plural of hygroscope. • HYGROSCOPE n. an instrument for displaying changes in air humidity. |
| HYPNOGENOUS | • hypnogenous adj. Inducing sleep. • hypnogenous adj. Inducing hypnosis. • HYPNOGENOUS adj. relating to the production of hypnotic sleep, also HYPNOGENETIC, HYPNOGENIC. |
| HYPNOLOGIES | • HYPNOLOGY n. the study of sleep or hypnosis. |
| OSTEOGRAPHY | • osteography n. The scientific description of bones; osteology. • OSTEOGRAPHY n. a description of bones. |
| OSTREOPHAGY | • OSTREOPHAGY n. the eating of oysters. |
| PERISSOLOGY | • perissology n. Superfluity of words; verbosity; long-windedness. • PERISSOLOGY n. superfluity of words, pleonasm. |
| PHAGOCYTOSE | • phagocytose v. (Immunology, cytology) To phagocytize; to ingest by phagocytosis. • PHAGOCYTOSE v. to subject to phagocytic action. |
| PHRASEOLOGY | • phraseology n. Study of set or fixed expressions. • phraseology n. The style in which words and phrases are used in writing or speech. • phraseology n. A group of specialized words and expressions used by a particular group. |
| PHYCOLOGIES | • PHYCOLOGY n. the study of algae, aka algology. |
| PHYTOLOGIES | • phytologies n. Plural of phytology. • PHYTOLOGY n. the study of plants. |
| PROTOGYNIES | • PROTOGYNY n. the development of female organs before male to avoid self-fertilization. |
| RESPIROLOGY | • respirology n. Synonym of pulmonology. • RESPIROLOGY n. the branch of medicine concerned with breathing. |
| SPECTROLOGY | • spectrology n. The science of spectrum analysis. • spectrology n. The study of ghosts and spirits; demonology. • SPECTROLOGY n. the study of ghosts. |
| SPELAEOLOGY | • spelaeology n. Alternative form of speleology. • SPELAEOLOGY n. the study and exploration of caves, also SPELEOLOGY. |