| APOSTROPHUS | • APOSTROPHUS n. (Greek) a symbol resembling a reversed letter C used in Roman numerals to denote large numbers. |
| HIPPEASTRUM | • Hippeastrum prop.n. A taxonomic genus within the family Amaryllidaceae – certain South American flowers, sometimes called amaryllises. • HIPPEASTRUM n. any plant of the South American genus Hippeastrum, bulbous, with white or red flowers. |
| PERSULPHATE | • persulphate n. Alternative spelling of persulfate. • PERSULPHATE n. that sulphate of a metal which contains the relatively greater quantity of oxygen or of the acid radical, also PERSULFATE. |
| PHOSPHOROUS | • phosphorous adj. (Chemistry) Of or pertaining to phosphorus. • phosphorous adj. Resembling phosphorus. • phosphorous adj. (Chemistry) Of relating to or containing trivalent phosphorus. |
| PHOSPHURETS | • phosphurets n. Plural of phosphuret. • PHOSPHURET n. (obsolete) a phosphide, also PHOSPHORET. |
| PORCUPINISH | • porcupinish adj. Resembling or characteristic of a porcupine or its spines; defensive, prickly. • PORCUPINISH adj. like a porcupine. |
| PREPURCHASE | • prepurchase adj. Prior to purchase. • prepurchase v. (Transitive) To purchase in advance. • prepurchase n. A purchase made in advance. |
| PSEUDOGRAPH | • pseudograph n. (Graph theory) A graph that contains loops as well as multiple edges between vertices. • pseudograph n. A false writing; a spurious document; a forgery. • PSEUDOGRAPH n. spurious writing; forgery. |
| PSEUDOMORPH | • pseudomorph n. A deceptive, irregular, or false form; specifically… • pseudomorph v. To be transformed into such a form. • PSEUDOMORPH n. a false or abnormal physical form. |
| PURSERSHIPS | • purserships n. Plural of pursership. • PURSERSHIP n. the office of purser. |
| PYROPHOROUS | • pyrophorous adj. (Archaic) light-producing. • pyrophorous adj. (Archaic) of or relating to pyrophorus. • PYROPHOROUS adj. spontaneously igniting in air, also PYROPHORIC. |
| SUPERHYPING | • SUPERHYPE v. to subject to an exceptional degree of hype. |
| SUPERPHONES | • superphones n. Plural of superphone. • SUPERPHONE n. a telephone with a high-speed processor that can perform many of the functions of a computer. |
| SUPERPHYLUM | • superphylum n. (Taxonomy) A taxonomic category above phylum and below subkingdom. • SUPERPHYLUM n. a taxonomical division above phylum. |
| THRUPPENCES | • thruppences n. Plural of thruppence. • THRUPPENCE n. threepence, also THREEPENCE, THREEPENNY, THRUPPENNY. |
| TOUCHPAPERS | • touchpapers n. Plural of touchpaper. • touch-papers n. Plural of touch-paper. • TOUCHPAPER n. paper soaked in saltpetre and used for firing gunpowder. |
| UMPIRESHIPS | • umpireships n. Plural of umpireship. • UMPIRESHIP n. umpirage; arbitrament. |