| HYPOPLASTRON | • hypoplastron n. The third lateral plate in the plastron of turtles. • HYPOPLASTRON n. the plate behind the hyoplastron in a turtle's plastron. |
| HYPOSTROPHES | • hypostrophes n. Plural of hypostrophe. • HYPOSTROPHE n. a return to the primary argument after digression. |
| MORPHOGRAPHY | • morphography n. Descriptive morphology. • MORPHOGRAPHY n. a morphological description or study. |
| PHOTOPOLYMER | • photopolymer n. (Chemistry) Any polymer that reacts to light with a physical or chemical change, used especially for teeth fillings. • PHOTOPOLYMER n. a photosensitive plastic used esp. in the manufacture of printing plates. |
| PHOTOTHERAPY | • phototherapy n. The use of light to treat disorders of the skin, and certain mood disorders. • PHOTOTHERAPY n. the treatment of disease by light. |
| POLAROGRAPHY | • polarography n. (Chemistry) An electrochemical technique for the analysis of redox reactions. • POLAROGRAPHY n. a technique for determining the concentration and nature of the ions in a solution by an electrolytic process. |
| POLYMORPHISM | • polymorphism n. The ability to assume different forms or shapes. • polymorphism n. (Biology) The coexistence, in the same locality, of two or more distinct forms independent of sex, not… • polymorphism n. (Object-oriented programming) The feature pertaining to the dynamic treatment of data elements based… |
| POLYMORPHOUS | • polymorphous adj. Having, or assuming, a variety of forms, characters, or styles. • polymorphous adj. (Biology) Having, or occurring in, several distinct forms. • polymorphous adj. (Chemistry) Crystallizing in two or more different forms; polymorphic. |
| PORPHYROPSIN | • porphyropsin n. Any of a group of purple carotenoid pigments, similar to rhodopsin, in the retinas of some fish. • PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin. |
| PROPOXYPHENE | • propoxyphene n. Dextropropoxyphene. • PROPOXYPHENE n. a narcotic analgesic structurally related to methadone but less addicting. |
| PSYCHOTROPIC | • psychotropic adj. (Pharmacology) Affecting the mind or mental processes. • psychotropic n. (Pharmacology) A psychotropic drug or agent. • PSYCHOTROPIC adj. acting on the mind. |
| PYROMORPHITE | • pyromorphite n. (Mineralogy) A yellowish-green mineral, a mixed phosphate and chloride of lead with the chemical formula… • PYROMORPHITE n. a green, brown, or yellow lead ore. |
| PYROPHORUSES | • PYROPHORUS n. any substance capable of igniting spontaneously on exposure to air. |
| PYTHONOMORPH | • pythonomorph n. Any large extinct reptile of the taxon Pythonomorpha. • pythonomorph n. Any member of the taxon Pythonomorpha. • PYTHONOMORPH n. a large marine reptile of the Cretaceous period, with long, scaly body and paddle-shaped limbs. |
| SYNAPOMORPHY | • synapomorphy n. (Cladistics) A derived trait that is shared by two or more taxa of shared ancestry. |