| HYPSOGRAPHIES | • HYPSOGRAPHY n. the branch of geography dealing with the measurement and mapping of heights above sea level. |
| PAPYROLOGISTS | • papyrologists n. Plural of papyrologist. • PAPYROLOGIST n. a student of papyrology. |
| PARAPSYCHISMS | • PARAPSYCHISM n. panpsychistic parallelism. |
| PARAPSYCHOSIS | • PARAPSYCHOSIS n. an abnormal psychosis. |
| PERSPICUOUSLY | • perspicuously adv. With clarity and lucidity. • PERSPICUOUS adv. easily understood; clearly expressed. |
| PITYROSPORUMS | • PITYROSPORUM n. a yeastlike fungus which can cause pityriasis. |
| POLYGRAPHISTS | • polygraphists n. Plural of polygraphist. • POLYGRAPHIST n. one who operates a polygraph. |
| POLYISOPRENES | • polyisoprenes n. Plural of polyisoprene. • POLYISOPRENE n. a rubberlike polymer of isoprene. |
| POLYMORPHISMS | • polymorphisms n. Plural of polymorphism. • POLYMORPHISM n. the circumstance in which two minerals with different crystalline structures have identical chemical compositions, e.g. diamond and graphite. |
| PORPHYROPSINS | • porphyropsins n. Plural of porphyropsin. • PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin. |
| PRESBYTERSHIP | • presbytership n. The office or station of a presbyter; presbyterate. • PRESBYTERSHIP n. the office of presbyter, an elder in the early Christian church. |
| PSYCHOTROPICS | • psychotropics n. Plural of psychotropic. • PSYCHOTROPIC n. a drug acting on the mind. |
| SAPROPHYTISMS | • SAPROPHYTISM n. being a saprophyte. |
| SUPERPHYSICAL | • superphysical adj. Above or beyond physics; not explainable by physical laws. • SUPERPHYSICAL adj. being above or beyond the physical world or explanation on physical principles. |
| TYPOGRAPHISTS | • typographists n. Plural of typographist. • TYPOGRAPHIST n. one who does typography. |