| PERIMORPHS | • perimorphs n. Plural of perimorph. • PERIMORPH n. a crystal of one species enclosing one of another species. |
| PORPHYRIAS | • porphyrias n. Plural of porphyria. • PORPHYRIA n. any of various disorders of metabolism resulting in the excretion of an excessive quantity of porphyrins in the urine. |
| PORPHYRIES | • porphyries n. Plural of porphyry. • PORPHYRY n. (Greek) a very hard, variegated rock of a purple and white colour, used in sculpture. |
| 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. |
| PORPHYRIOS | • porphyrios n. Plural of porphyrio. • PORPHYRIO n. any bird of the purple-coot genus Porphyrio. |
| PORPHYRITE | • porphyrite n. A rock with a porphyritic structure. • PORPHYRITE n. a rock with a porphyritic structure; as, augite porphyrite. |
| PORPHYROID | • porphyroid n. (Mineralogy) A crystalline and schistose rock containing porphyritic crystals of feldspar. • PORPHYROID n. a metamorphic rock having a texture characterized by large crystals set in a finer groundmass. |
| PRETORSHIP | • pretorship n. Alternative form of praetorship. • PRETORSHIP n. the office of pretor, a magistrate of ancient Rome, also PRAETORSHIP. |
| PRIORSHIPS | • priorships n. Plural of priorship. • PRIORSHIP n. the state or office of prior, also PRIORATE. |
| 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. |
| PROPHESIER | • prophesier n. A person who makes prophecies or foretells the future; a prophet. • PROPHESIER n. one who prophesies. |
| PYROPHORIC | • pyrophoric adj. Spontaneously igniting in air, especially when in a finely divided state. • pyrophoric adj. Producing sparks, especially by friction. • pyrophoric adj. (Fire investigation) Able to oxidize with exposure to atmospheric oxygen at normal temperatures. |
| SPIROGRAPH | • spirograph n. (Medicine) an instrument for measuring and recording the depth and rapidity of breathing movements. • Spirograph n. A geometric drawing toy consisting of a set of plastic gears and toothed rings. • SPIROGRAPH n. an instrument recording movements of breathing. |
| SPIROPHORE | • spirophore n. (Historical) A device for inducing artificial respiration by means of an airtight case for the body and an air pump. • SPIROPHORE n. an apparatus for inducing artificial respiration by means of an airtight case for the body and an air pump. |
| WORSHIPPER | • worshipper n. A person who worships, especially at a place of assembly for religious services. • WORSHIPPER n. one who worships, also WORSHIPER. |