| HYDROSULPHATES | • hydrosulphates n. Plural of hydrosulphate. • HYDROSULPHATE n. any quaternary acid salt formed by addition of an organic base to sulphuric acid, such as aniline hydrosulphate. |
| HYPERAESTHESIA | • hyperaesthesia n. Alternative spelling of hyperesthesia. • hyperæsthesia n. Obsolete form of hyperaesthesia. • HYPERAESTHESIA n. excessive sensitivity, also HYPERESTHESIA. |
| HYPERAESTHESIC | • HYPERAESTHESIC adj. excessively sensitive, also HYPERAESTHETIC. |
| HYPERESTHESIAS | • hyperesthesias n. Plural of hyperesthesia. • HYPERESTHESIA n. excessive sensitivity, also HYPERAESTHESIA. |
| HYPHENISATIONS | • HYPHENISATION n. the process of hyphenising, also HYPHENIZATION. |
| HYPOPHOSPHATES | • hypophosphates n. Plural of hypophosphate. • HYPOPHOSPHATE n. any salt or ester of hypophosphoric acid. |
| PHOSPHORYLASES | • phosphorylases n. Plural of phosphorylase. • PHOSPHORYLASE n. any of the enzymes that catalyze phosphorolysis with the formation of organic phosphates. |
| PHOSPHORYLATES | • phosphorylates v. Third-person singular simple present indicative form of phosphorylate. • PHOSPHORYLATE v. to cause (an organic compound) to take up or combine with phosphoric acid or a phosphorus-containing group. |
| PHOTOSYNTHATES | • photosynthates n. Plural of photosynthate. • PHOTOSYNTHATE n. a product of photosynthesis. |
| PHYSIOGRAPHERS | • physiographers n. Plural of physiographer. • PHYSIOGRAPHER n. one who practises physiography. |
| PHYSIOGRAPHIES | • physiographies n. Plural of physiography. • PHYSIOGRAPHY n. physical geography. |
| PSYCHASTHENIAS | • psychasthenias n. Plural of psychasthenia. • PSYCHASTHENIA n. an incapacity to resolve doubts/uncertainties or to resist obsessions/compulsions that one knows are irrational. |
| PSYCHASTHENICS | • psychasthenics n. Plural of psychasthenic. • PSYCHASTHENIC n. one suffering from psychasthenia. |
| PSYCHOGRAPHIES | • psychographies n. Plural of psychography. • PSYCHOGRAPHY n. the production of images attributed to supernatural causes. |
| PYROPHOSPHATES | • pyrophosphates n. Plural of pyrophosphate. • PYROPHOSPHATE n. a salt or ester of pyrophosphoric acid. |