| EMPLASTRUM | • EMPLASTRUM n. a medicated plaster, also EMPLASTRON. |
| JUMPMASTER | • jumpmaster n. One who supervises the jumping of paratroopers or other parachutists from an aeroplane. |
| MOMPRENEUR | • mompreneur n. (North America) Alternative form of mumpreneur. • MOMPRENEUR n. a woman who combines running a business enterprise with looking after her children, also MUMPRENEUR. |
| MUGWUMPERY | • mugwumpery n. (US politics, slang) The acts and views of the mugwumps. • MUGWUMPERY n. the acts and views of a mugwump, a bolter from the Republican party in 1884; a political independent. |
| MUMPRENEUR | • mumpreneur n. (Informal) A mother who works as a business entrepreneur in addition to her family commitments. • MUMPRENEUR n. a woman who combines running a business enterprise with looking after her children, also MOMPRENEUR. |
| PARAMECIUM | • paramecium n. An oval-shaped protozoan organism of the genus Paramecium. • Paramecium prop.n. A taxonomic genus within the family Parameciidae – a ciliophore widely used as a model organism and for education. • PARAMECIUM n. a genus of tiny animals including the slipper animalcule, also PARAMAECIUM, PARAMOECIUM. |
| PERIMYSIUM | • perimysium n. (Anatomy) A layer of connective tissue which surrounds several muscle fibers into bundles. • PERIMYSIUM n. the connective tissue which surrounds and binds together muscle fibres. |
| PNEUMOGRAM | • pneumogram n. (Medicine) A record (often overnight) of the respiratory movements of a subject by the use of pneumography. • PNEUMOGRAM n. an X-ray photograph made by a pneumograph. |
| POMOERIUMS | • POMOERIUM n. (Latin) an open space around a town within the walls. |
| PRESUMMITS | • PRESUMMIT n. a meeting held prior to a summit. |
| PROMETHEUM | • prometheum n. A rejected name for the chemical element promethium. • PROMETHEUM n. the former name of promethium, a radioactive element, also PROMETHIUM. |
| PROMETHIUM | • promethium n. A metallic chemical element (symbol Pm) with an atomic number of 61. • PROMETHIUM n. a radioactive rare-earth element, also PROMETHEUM. |
| PROOEMIUMS | • proœmiums n. Plural of proœmium. • PROOEMIUM n. a preface, also PROEM, PROOEMION. |
| SPERMARIUM | • SPERMARIUM n. the male germ gland, also SPERMARY. |
| SPERMATIUM | • spermatium n. One of the motionless spermatozoids in the conceptacles of certain fungi. • SPERMATIUM n. one of the motionless spermatozoids in the conceptacles of certain fungi. |