| IMPRIMATUR | • imprimatur n. (Printing) An official license to publish or print something, especially when censorship applies. • imprimatur n. (By extension) Any mark of official approval. • IMPRIMATUR n. (Latin) a license to print or publish, esp. one issued by a censor of the Roman Catholic Church. |
| IMPROMPTUS | • impromptus n. Plural of impromptu. • IMPROMPTU n. a short piece of impromptu music. |
| MICROPUMPS | • micropumps n. Plural of micropump. • MICROPUMP n. a miniature pump inserted under the skin to administer a drug. |
| 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. |
| POMOERIUMS | • POMOERIUM n. (Latin) an open space around a town within the walls. |
| PRESUMMITS | • PRESUMMIT n. a meeting held prior to a summit. |
| PRIMORDIUM | • primordium n. (Anatomy) An aggregation of cells that is the first stage in the development of an organ. • PRIMORDIUM n. (Latin) the first discernible rudiment. |
| PROCAMBIUM | • procambium n. (Botany) A meristem that lies just inside the protoderm and develops into primary xylem and primary phloem. • PROCAMBIUM n. the young tissue of a fibrovascular bundle before its component cells have begun to be differentiated. |
| 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. |
| PROSTOMIUM | • prostomium n. (Zoology) That portion of the head of an annelid situated in front of the mouth. • PROSTOMIUM n. that portion of the head of an annelid situated in front of the mouth. |
| 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. |