| PYROPHOSPHATE | • pyrophosphate n. (Inorganic chemistry) Any salt or ester of pyrophosphoric acid. • PYROPHOSPHATE n. a salt or ester of pyrophosphoric acid. |
| PHOSPHOPROTEIN | • phosphoprotein n. (Biochemistry) any protein containing bound phosphate or complexed with a phospholipid. • PHOSPHOPROTEIN n. any of various proteins, such as casein, that contain combined phosphoric acid. |
| PROPRIETORSHIP | • proprietorship n. The state of being a proprietor; ownership. • PROPRIETORSHIP n. the office of proprietor. |
| PROTOPORPHYRIN | • protoporphyrin n. (Biochemistry) Any porphyrin that lacks a central metal ion. • PROTOPORPHYRIN n. metal-free porphyrin derived from blood hemin. |
| PYROPHOSPHATES | • pyrophosphates n. Plural of pyrophosphate. • PYROPHOSPHATE n. a salt or ester of pyrophosphoric acid. |
| PYROPHOTOGRAPH | • PYROPHOTOGRAPH n. a burnt-in photograph, e.g. on glass or porcelain. |
| PHOSPHOPROTEINS | • phosphoproteins n. Plural of phosphoprotein. • PHOSPHOPROTEIN n. any of various proteins, such as casein, that contain combined phosphoric acid. |
| PHOTOTOPOGRAPHY | • phototopography n. The surveying and mapping of a terrain based solely on terrestrial photographs. • PHOTOTOPOGRAPHY n. the preparation of topographic maps from photographs. |
| PHOTOTYPOGRAPHY | • phototypography n. A photomechanical method of printing made to resemble traditional metal typography. • PHOTOTYPOGRAPHY n. any printing process involving the use of photography. |
| PROPRIETORSHIPS | • proprietorships n. Plural of proprietorship. • PROPRIETORSHIP n. the office of proprietor. |
| 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. |