| HYPNOPAEDIAS | • HYPNOPAEDIA n. training or instruction during sleep. |
| HYPNOPHOBIAS | • HYPNOPHOBIA n. an irrational fear of sleep. |
| HYPOPLASTRON | • hypoplastron n. The third lateral plate in the plastron of turtles. • HYPOPLASTRON n. the plate behind the hyoplastron in a turtle's plastron. |
| LYMPHOPENIAS | • lymphopenias n. Plural of lymphopenia. • LYMPHOPENIA n. an abnormally low level of lymphocytes in the blood. |
| PHONOTYPISTS | • phonotypists n. Plural of phonotypist. • PHONOTYPIST n. one who practises phonotypy. |
| PHYCOPHAEINS | • PHYCOPHAEIN n. a brown pigment found in seaweeds. |
| PHYLLOPLANES | • phylloplanes n. Plural of phylloplane. • PHYLLOPLANE n. the surface of a leaf considered as a habitat, esp. for microorganisms. |
| PODOPHYLLINS | • podophyllins n. Plural of podophyllin. • PODOPHYLLIN n. a cathartic resin obtained from the rhizomes of the Podophyllum genus, also PODOPHYLIN. |
| POLYPHONISTS | • polyphonists n. Plural of polyphonist. • POLYPHONIST n. a contrapuntist, one who writes counterpoint. |
| 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. |
| POSTHYPNOTIC | • posthypnotic adj. After being hypnotized. • POSTHYPNOTIC adj. taking place after hypnosis. |
| PROPHESYINGS | • prophesyings n. Plural of prophesying. • PROPHESYING n. the act of prophesying. |
| PSILANTHROPY | • psilanthropy n. (Theology) The doctrine that Jesus Christ was merely human. • PSILANTHROPY n. the belief that Christ was not divine but divinely inspired. |
| SPHYGMOPHONE | • sphygmophone n. (Physiology) An electrical instrument for determining by ear the rhythm of the pulse of a person at a distance. • SPHYGMOPHONE n. an instrument for hearing the pulse. |
| SYNAPOMORPHY | • synapomorphy n. (Cladistics) A derived trait that is shared by two or more taxa of shared ancestry. |
| TRYPTOPHANES | • tryptophanes n. Plural of tryptophane. • TRYPTOPHANE n. an essential amino acid, also TRYPTOPHAN. |