| HIPPEASTRUMS | • HIPPEASTRUM n. any plant of the South American genus Hippeastrum, bulbous, with white or red flowers. |
| MESOHIPPUSES | • MESOHIPPUS n. an extinct mammal of the Horse family. |
| PERSULPHATES | • persulphates n. Plural of persulphate. • PERSULPHATE n. that sulphate of a metal which contains the relatively greater quantity of oxygen or of the acid radical, also PERSULFATE. |
| PHOSPHONIUMS | • phosphoniums n. Plural of phosphonium. • PHOSPHONIUM n. the radical PH4, analogous to ammonium. |
| PHOSPHORUSES | • phosphoruses n. Plural of phosphorus. • PHOSPHORUS n. a chemical element. |
| PREPURCHASES | • prepurchases v. Third-person singular simple present indicative form of prepurchase. • PREPURCHASE v. to purchase in advance. |
| PSEUDOGRAPHS | • pseudographs n. Plural of pseudograph. • PSEUDOGRAPH n. spurious writing; forgery. |
| PSEUDOMORPHS | • pseudomorphs n. Plural of pseudomorph. • PSEUDOMORPH n. a false or abnormal physical form. |
| PYROPHORUSES | • PYROPHORUS n. any substance capable of igniting spontaneously on exposure to air. |
| SAPROPHAGOUS | • saprophagous adj. Feeding on dead or decaying organic matter. • SAPROPHAGOUS adj. feeding on decaying material. |
| SPOROPHOROUS | • sporophorous adj. Relating to sporophores. • sporophorous adj. Having spores. • SPOROPHOROUS adj. bearing spores, also SPOROPHORIC. |
| SUPERIORSHIP | • superiorship n. The monastic role or position of superior. • SUPERIORSHIP n. the office of superior. |
| UPPISHNESSES | • uppishnesses n. Plural of uppishness. • UPPISHNESS n. the state of being uppish. |
| XIPHOPAGUSES | • XIPHOPAGUS n. a set of Siamese twins joined in the region of the xiphoid cartilage. |