| ALEXIPHARMAKON | • alexipharmakon n. Alternative form of alexipharmacon. • ALEXIPHARMAKON n. an antidote to poison. |
| EXHILARATINGLY | • exhilaratingly adv. In a way that exhilarates. • EXHILARATING adv. EXHILARATE, to make cheerful and excited. |
| EXOTHERMICALLY | • exothermically adv. In an exothermic manner. • EXOTHERMIC adv. of a chemical reaction, giving out heat, also EXOTHERMAL. |
| EXTRAVEHICULAR | • extravehicular adj. Relating to, on happening in, the space outside a vehicle, especially a spacecraft in space. • extra-vehicular adj. Alternative spelling of extravehicular. • EXTRAVEHICULAR adj. taking place outside a vehicle (as a spacecraft). |
| HYDROXYLAMINES | • hydroxylamines n. Plural of hydroxylamine. • HYDROXYLAMINE n. a colorless odorless nitrogenous base that resembles ammonia in its reactions. |
| HYDROXYLATIONS | • hydroxylations n. Plural of hydroxylation. • HYDROXYLATION n. the act of hydroxylating. |
| HYPERCATALEXIS | • hypercatalexis n. (Poetry) The addition of one or two syllables to the last foot of a verse. • HYPERCATALEXIS n. the state of being hypercatalectic. |
| HYPEREXCITABLE | • hyperexcitable adj. Unusually or excessively excitable. • HYPEREXCITABLE adj. excessively excitable. |
| HYPERSEXUALITY | • hypersexuality n. The desire for sexual activity at levels high enough to be considered clinically significant. • HYPERSEXUALITY n. the state of being hypersexual. |
| LEXICOGRAPHERS | • lexicographers n. Plural of lexicographer. • LEXICOGRAPHER n. an author or editor of a dictionary. |
| LEXICOGRAPHIES | • lexicographies n. Plural of lexicography. • LEXICOGRAPHY n. the editing or making of a dictionary. |
| LEXICOGRAPHIST | • lexicographist n. (Chiefly archaic) A student specialising in the discipline of lexicography; lexicographer. • LEXICOGRAPHIST n. one who makes dictionaries. |
| XEROPHTHALMIAS | • xerophthalmias n. Plural of xerophthalmia. • XEROPHTHALMIA n. extreme dryness of the conjunctive, thought to stem from a vitamin A deficiency, also XEROMA. |
| XEROPHYTICALLY | • xerophytically adv. As a xerophyte. • XEROPHYTIC adv. able to withstand drought. |
| XIPHIHUMERALIS | • xiphihumeralis n. A long, flat strip of pectoral muscle comprising a band of parallel fibres, found in felines. • XIPHIHUMERALIS n. in vertebrates, a muscle leading from the xiphoid cartilage to the humerus. |
| XIPHIPLASTRALS | • XIPHIPLASTRAL n. a type of chelonian. |