| HIPPEASTRUMS | • HIPPEASTRUM n. any plant of the South American genus Hippeastrum, bulbous, with white or red flowers. |
| HIPPOCENTAUR | • hippocentaur n. Centaur. • HIPPOCENTAUR n. a mythical creature, half man and half horse. |
| HYPOSULPHITE | • hyposulphite n. Alternative spelling of hyposulfite. • HYPOSULPHITE n. a salt of hyposulphurous acid. |
| MESOHIPPUSES | • MESOHIPPUS n. an extinct mammal of the Horse family. |
| PERIMORPHOUS | • perimorphous adj. Perimorphic. • PERIMORPHOUS adj. like a perimorph, also PERIMORPHIC. |
| PERINEPHRIUM | • PERINEPHRIUM n. the fatty tissue surrounding the kidney. |
| PERSULPHURIC | • PERSULPHURIC adj. denoting a type of acid, also PERSULFURIC. |
| PHILADELPHUS | • philadelphus n. (Botany) Any of the genus Philadelphus of shrubs. • Philadelphus prop.n. A taxonomic genus within the family Hydrangeaceae – the mock oranges. • PHILADELPHUS n. a flowering shrub, aka mock orange. |
| PICTUREPHONE | • picturephone n. Videophone. • PICTUREPHONE n. a device which allows speakers on the telephone to see each other. |
| POLYSULPHIDE | • polysulphide n. (Chemistry) Alternative spelling of polysulfide. • POLYSULPHIDE n. a sulfide containing two or more atoms of sulfur in the molecule, also POLYSULFIDE. |
| SUPERIORSHIP | • superiorship n. The monastic role or position of superior. • SUPERIORSHIP n. the office of superior. |
| THRUPPENNIES | • thruppennies n. Plural of thruppenny. • THRUPPENNY n. threepence, as in thruppenny bit, also THREEPENCE, THREEPENNY, THRUPPENCE. |
| UNHAPPENINGS | • unhappenings n. Plural of unhappening. • UNHAPPENING n. something that is not a happening. |
| UNWORSHIPPED | • unworshipped adj. Not worshipped. • UNWORSHIPPED adj. not worshipped. |
| 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. |