| HETERODUPLEXES | • heteroduplexes n. Plural of heteroduplex. • HETERODUPLEX n. a nucleic-acid molecule, such as DNA, composed of two chains with each derived from a different parent molecule. |
| HETEROSEXUALLY | • heterosexually adj. In a heterosexual way. • HETEROSEXUAL adv. attracted to the opposite sex. |
| HYDROXYLATIONS | • hydroxylations n. Plural of hydroxylation. • HYDROXYLATION n. the act of hydroxylating. |
| HYPEREXTENSION | • hyperextension n. The extension of a joint beyond its normal range; the condition of being hyperextended. • hyperextension n. An exercise performed by lying on the stomach, ideally inclined upwards as on a Roman chair to reach… • HYPEREXTENSION n. the extension of a joint beyond its normal range. |
| LEXICOGRAPHIST | • lexicographist n. (Chiefly archaic) A student specialising in the discipline of lexicography; lexicographer. • LEXICOGRAPHIST n. one who makes dictionaries. |
| MORPHOSYNTAXES | • morphosyntaxes n. Plural of morphosyntax. • MORPHOSYNTAX n. the study of the interaction of morphology and syntax. |
| NEOORTHODOXIES | • NEOORTHODOXY n. reactionaryism. |
| ORTHOMYXOVIRUS | • orthomyxovirus n. (Virology) Any RNA virus of Orthomyxoviridae family characterised by having two long glycoprotein spikes. |
| ORTHOPYROXENES | • orthopyroxenes n. Plural of orthopyroxene. • ORTHOPYROXENE n. a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene. |
| PNEUMOTHORAXES | • pneumothoraxes n. Plural of pneumothorax. • PNEUMOTHORAX n. accumulation of air or gas in the pleural cavity. |
| THYROTOXICOSES | • thyrotoxicoses n. Plural of thyrotoxicosis. • THYROTOXICOSIS n. hyperthyroidism with goitre and exophthalmia, Graves' disease. |
| THYROTOXICOSIS | • thyrotoxicosis n. (Medicine) The medical condition caused by the state of raised levels of thyroid hormone. • THYROTOXICOSIS n. hyperthyroidism with goitre and exophthalmia, Graves' disease. |
| XANTHOCHROISMS | • XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear. |
| XANTHOCHROMIAS | • XANTHOCHROMIA n. any yellowish discoloration, esp. of the cerebrospinal fluid. |
| XANTHOPTERINES | • XANTHOPTERINE n. a yellow pigment obtainable from the wings of yellow butterflies and the urine of mammals, also XANTHOPTERIN. |
| XEROPHTHALMIAS | • xerophthalmias n. Plural of xerophthalmia. • XEROPHTHALMIA n. extreme dryness of the conjunctive, thought to stem from a vitamin A deficiency, also XEROMA. |