| SUPERHIGHWAY | • superhighway n. (US) An expressway, especially one designed for high speeds. • superhighway n. (By extension) A major route that carries most of the traffic going in a given direction by a specified… • superhighway n. (Metaphoric) The primary mechanism used in the movement of electronic data or information; information superhighway. |
| HYDROCEPHALUS | • hydrocephalus n. (Medicine) A usually congenital condition in which an abnormal accumulation of fluid in the cerebral… • HYDROCEPHALUS n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY. |
| HYDROSULPHATE | • hydrosulphate n. Alternative form of hydrosulfate. • HYDROSULPHATE n. any quaternary acid salt formed by addition of an organic base to sulphuric acid, such as aniline hydrosulphate. |
| HYDROSULPHIDE | • hydrosulphide n. (Britain) Alternative spelling of hydrosulfide. • HYDROSULPHIDE n. a compound formed by action of hydrogen sulphide on a hydroxide. |
| HYDROSULPHITE | • hydrosulphite n. Alternative spelling of hydrosulfite. • HYDROSULPHITE n. a salt of hydrosulphurous acid; esp. the sodium salt, used as a reagent. |
| HYPERTROPHOUS | • hypertrophous adj. (Dated, medicine) Hypertrophic. • HYPERTROPHOUS adj. of an organ, abnormally enlarged. |
| SUPERHIGHWAYS | • superhighways n. Plural of superhighway. • SUPERHIGHWAY n. a multilane highway (as an expressway or turnpike) designed for high-speed traffic. |
| HETEROPHYLLOUS | • heterophyllous adj. (Botany) Having leaves of different types upon the same plant. • HETEROPHYLLOUS adj. having the foliage leaves of more than one form on the same plant or stem. |
| HYDROCEPHALOUS | • hydrocephalous adj. Having a swollen head. • hydrocephalous adj. (Medicine) Afflicted with hydrocephalus. • HYDROCEPHALOUS adj. suffering from hydrocephaly, also HYDROCEPHALIC. |
| 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. |
| HYDROSULPHIDES | • hydrosulphides n. Plural of hydrosulphide. • HYDROSULPHIDE n. a compound formed by action of hydrogen sulphide on a hydroxide. |
| HYDROSULPHITES | • hydrosulphites n. Plural of hydrosulphite. • HYDROSULPHITE n. a salt of hydrosulphurous acid; esp. the sodium salt, used as a reagent. |
| PHENYLTHIOUREA | • phenylthiourea n. Phenylthiocarbamide. • PHENYLTHIOUREA n. a crystalline compound used to test for the presence of a certain dominant gene (the compound tasting bitter to those who possess the gene). |
| THERMOPHYLLOUS | • THERMOPHYLLOUS adj. having leaves only in the warmer part of the year, deciduous. |
| BRACHYCEPHALOUS | • brachycephalous adj. Relating to brachycephaly; brachycephalic. • BRACHYCEPHALOUS adj. short-headed, esp. having a skull whose breadth is 80 per cent or more of its length. |
| CHEMOAUTOTROPHY | • chemoautotrophy n. (Biology) A mode of growth in which CO2 is the exclusive source of assimilated carbon, and energy is… • CHEMOAUTOTROPHY n. the production of energy by the oxidation of inorganic compounds, such as iron, ammonia and hydrogen sulphide. |
| HYDROCEPHALUSES | • hydrocephaluses n. Plural of hydrocephalus. • HYDROCEPHALUS n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY. |
| NEUROHYPOPHYSES | • neurohypophyses n. Plural of neurohypophysis. • NEUROHYPOPHYSIS n. the portion of the pituitary gland that is composed of the infundibulum and posterior lobe and is concerned with the secretion of various hormones. |
| NEUROHYPOPHYSIS | • neurohypophysis n. (Anatomy) The posterior lobe of the pituitary gland, responsible for the release of oxytocin and antidiuretic… • NEUROHYPOPHYSIS n. the portion of the pituitary gland that is composed of the infundibulum and posterior lobe and is concerned with the secretion of various hormones. |
| PHENYLTHIOUREAS | • phenylthioureas n. Plural of phenylthiourea. • PHENYLTHIOUREA n. a crystalline compound used to test for the presence of a certain dominant gene (the compound tasting bitter to those who possess the gene). |