| ANTIHYDROGENS | • antihydrogens n. Plural of antihydrogen. • ANTIHYDROGEN n. an antimatter form of hydrogen. |
| DEHYPNOTISING | • dehypnotising v. Present participle of dehypnotise. • DEHYPNOTISE v. to free from hypnosis, also DEHYPNOTIZE. |
| ETHYLBENZENES | • ethylbenzenes n. Plural of ethylbenzene. • ETHYLBENZENE n. a liquid aromatic hydrocarbon used chiefly in the manufacture of styrene. |
| HYDRASTININES | • hydrastinines n. Plural of hydrastinine. • HYDRASTININE n. a colourless crystalline water-soluble compound whose pharmacological action resembles that of hydrastine. |
| HYMENOPTERANS | • hymenopterans n. Plural of hymenopteran. • HYMENOPTERAN n. an order of insect having four membranous wings, e.g. ants, bees, wasps, also HYMENOPTERON. |
| HYMENOPTERONS | • hymenopterons n. Plural of hymenopteron. • HYMENOPTERON n. an order of insect having four membranous wings, e.g. ants, bees, wasps, also HYMENOPTERAN. |
| HYPERTENSIONS | • hypertensions n. Plural of hypertension. • HYPERTENSION n. abnormally or excessively high pressure of arterial blood. |
| HYPHENISATION | • HYPHENISATION n. the process of hyphenising, also HYPHENIZATION. |
| HYPOXANTHINES | • hypoxanthines n. Plural of hypoxanthine. • HYPOXANTHINE n. a purine base found in plant and animal tissues that yields xanthine on oxidation. |
| NONHYSTERICAL | • nonhysterical adj. Not hysterical (prone to hysterics). • NONHYSTERICAL adj. not hysterical. |
| NYCHTHEMERONS | • nychthemerons n. Plural of nychthemeron. • NYCHTHEMERON n. (Greek) a full period of a day and night. |
| PARASYNTHETON | • parasyntheton n. (Grammar) A parasynthetic compound. • PARASYNTHETON n. a word derived from a compound, e.g. come-at-able. |
| PENNYWHISTLES | • pennywhistles n. Plural of pennywhistle. • penny␣whistles n. Plural of penny whistle. • PENNYWHISTLE n. a cheap toy whistle originally sold for a penny. |
| PERICYNTHIONS | • pericynthions n. Plural of pericynthion. • PERICYNTHION n. the point at which a spacecraft in lunar orbit is nearest to the moon. |
| PHYTONADIONES | • PHYTONADIONE n. phylloquinone, vitamin K1. |
| REHYPNOTISING | • REHYPNOTISE v. to hypnotise again, also REHYPNOTIZE. |
| SEVENTEENTHLY | • seventeenthly adv. In the seventeenth place; seventeenth in a row. • SEVENTEENTH adv. number seventeen in sequence. |