| LEPIDOPTEROLOGY | • lepidopterology n. (Biology, zoology, entomology) The scientific study of butterflies and moths (the Lepidoptera). • lepidopterology n. Lepidoptery, (the hobby of butterfly collecting). • LEPIDOPTEROLOGY n. the study of butterflies and moths. |
| PHOSPHORYLATION | • phosphorylation n. (Biochemistry) the process of transferring a phosphate group from a donor to an acceptor; often catalysed by enzymes. • PHOSPHORYLATION n. the process of phosphorylating a chemical compound. |
| PHOTOTOPOGRAPHY | • phototopography n. The surveying and mapping of a terrain based solely on terrestrial photographs. • PHOTOTOPOGRAPHY n. the preparation of topographic maps from photographs. |
| PHOTOTROPICALLY | • phototropically adv. In a phototropic manner. • PHOTOTROPIC adv. relating to phototropism, movement directed by light. |
| PHOTOTYPOGRAPHY | • phototypography n. A photomechanical method of printing made to resemble traditional metal typography. • PHOTOTYPOGRAPHY n. any printing process involving the use of photography. |
| PHOTOXYLOGRAPHY | • photoxylography n. A process in which a photograph is printed on wood to use as a template for engraving. • PHOTOXYLOGRAPHY n. wood engraving after a photographic impression on a woodblock. |
| PROPORTIONALITY | • proportionality n. (Uncountable) the property of being proportional. • proportionality n. (Uncountable) the principle that government action ought to be proportional to the ends achieved (e… • proportionality n. (Countable) the degree to which something is in proportion. |
| PROPORTIONATELY | • proportionately adv. In a proportionate manner; with due proportion; proportionally. • PROPORTIONATE adv. in proportion. |
| PROPOSITIONALLY | • propositionally adv. In a propositional manner. • PROPOSITIONAL adv. of the nature of a proposition. |
| PROTOPORPHYRINS | • protoporphyrins n. Plural of protoporphyrin. • PROTOPORPHYRIN n. metal-free porphyrin derived from blood hemin. |
| PYROPHOTOGRAPHS | • PYROPHOTOGRAPH n. a burnt-in photograph, e.g. on glass or porcelain. |
| PYROPHOTOGRAPHY | • pyrophotography n. (Photography) Any photographic process involving the use of heat to fix the picture. • PYROPHOTOGRAPHY n. the production of pyrophotographs. |
| PYROPHOTOMETERS | • PYROPHOTOMETER n. a type of pyrometer in which the temperature of an incandescent body is determined by photometric measurement of the light it emits. |