| CONTRAPROP | • CONTRAPROP n. a contra-rotating propeller. |
| PEPPERCORN | • peppercorn n. The seeds of the plant Piper nigrum. Commonly used as a spice, usually but not always ground or crushed. • peppercorn n. A small, insignificant quantity; a whit or jot. • Peppercorn prop.n. A surname. |
| PORPHYRINS | • porphyrins n. Plural of porphyrin. • PORPHYRIN n. any of a large group of red or purple crystalline pigments present in plant and animal tissues. |
| PREPORTION | • preportion v. To divide into individual portions before use. • pre-portion v. Alternative form of preportion. • PREPORTION v. to portion in advance. |
| PRONEPHRIC | • pronephric adj. Of or pertaining to the pronephros. • PRONEPHRIC adj. of or pertaining to the pronephros. |
| PRONEPHROI | • pronephroi n. Plural of pronephros. • PRONEPHROS n. a primitive kidney that disappears early in embryonic development. |
| PRONEPHROS | • pronephros n. (Anatomy) A primitive kidney in the lamprey and similar animals, and in other vertebrate embryos. • PRONEPHROS n. a primitive kidney that disappears early in embryonic development. |
| PROPERDINS | • PROPERDIN n. a natural protein in blood that helps provide immunity to infectious disease. |
| PROPERNESS | • properness n. The state or condition of being proper; propriety. • properness n. (Mathematics) The state or condition of being proper (Of a proper fraction, proper subset, etc.). • properness n. (Obsolete) Excellence, quality. |
| PROPORTION | • proportion n. (Countable) A quantity of something that is part of the whole amount or number. • proportion n. (Uncountable) Harmonious relation of parts to each other or to the whole. • proportion n. (Countable) Proper or equal share. |
| PROPOUNDER | • propounder n. One who propounds. • PROPOUNDER n. one who propounds. |
| PROSPERING | • prospering v. Present participle of prosper. • PROSPER v. to be successful. |
| PURPORTING | • purporting v. Present participle of purport. • PURPORT v. to profess or proclaim. |
| PYRENOCARP | • PYRENOCARP n. a perithecium, a small fruiting body containing ascospores. |
| UNDERPROPS | • underprops v. Third-person singular simple present indicative form of underprop. • UNDERPROP v. to prop from beneath. |
| UNPROPERLY | • unproperly adv. In an unproper manner; not properly. • UNPROPER adv. improper. |