| ANHYDRITES | • anhydrites n. Plural of anhydrite. • ANHYDRITE n. an anhydrous sulphate of lime, differing from gypsum in not containing water (whence the name). |
| DITHYRAMBS | • dithyrambs n. Plural of dithyramb. • DITHYRAMB n. a hymn or poem to honor Bacchus. |
| DYSARTHRIA | • dysarthria n. (Neurology, neuropsychology) Difficulty in articulating words due to a disturbance in the form or function… • DYSARTHRIA n. the impaired ability to articulate speech due to damage to the nervous system. |
| DYSPATHIES | • dyspathies n. Plural of dyspathy. • DYSPATHY n. dislike, also DISPATHY. |
| DYSTHESIAS | • dysthesias n. Plural of dysthesia. • DYSTHESIA n. a morbid habit of body, resulting in general discomfort and impatience. |
| DYSTHYMIAC | • dysthymiac n. Alternative form of dysthymic. • dysthymiac adj. Alternative form of dysthymic. • DYSTHYMIAC n. a person who suffers from dysthymia, despondency. |
| DYSTHYMIAS | • dysthymias n. Plural of dysthymia. • DYSTHYMIA n. a mild depression, despondency. |
| DYSTROPHIA | • dystrophia n. Dystrophy. • DYSTROPHIA n. impaired or imperfect nutrition; any of several disorders in which there is wasting of muscle tissue, also DYSTROPHY. |
| HYDANTOINS | • hydantoins n. Plural of hydantoin. • HYDANTOIN n. a colourless odourless crystalline compound found in beet molasses and used in the manufacture of pharmaceuticals. |
| HYDRASTINE | • hydrastine n. (Organic chemistry) A natural alkaloid present in goldenseal. • HYDRASTINE n. a white poisonous alkaloid extracted from the roots of the goldenseal, which has been used in medicine to contract the uterus and arrest haemorrhage. |
| HYDRATIONS | • hydrations n. Plural of hydration. • HYDRATION n. the act of combining with water. |
| HYDROTAXIS | • hydrotaxis n. (Biology) movement (of an organism or organ) in response to water. • HYDROTAXIS n. movement towards or away from water. |
| SWITCHYARD | • switchyard n. Part of a railway with an arrangement of switches (or points) allowing trains to be diverted and reassembled. • SWITCHYARD n. an enclosed area for the switching facilities of a power station. |
| THYLAKOIDS | • thylakoids n. Plural of thylakoid. • THYLAKOID n. any of a membranous disk of lamellae within plant chloroplasts. |
| THYRSOIDAL | • thyrsoidal adj. Alternative form of thyrsoid. • THYRSOIDAL adj. having the form of a thyrsus, also THYRSOID. |
| YARDLIGHTS | • yardlights n. Plural of yardlight. • yard␣lights n. Plural of yard light. • YARDLIGHT n. a strong light suspended on a pole, used to illuminate a farmyard. |