| ICHTHYOSAUR | • ichthyosaur n. Any of several fishlike marine reptiles of the extinct order Ichthyosauria of the early Triassic to… • ICHTHYOSAUR n. a large fossil marine reptile, also ICHTHYOSAURIAN, ICHTHYOSAURUS. |
| THROUGHWAYS | • throughways n. Plural of throughway. • THROUGHWAY n. (US) a motorway, also THRUWAY. |
| HYDROPHANOUS | • hydrophanous adj. (Mineralogy) Made transparent by immersion in water. • HYDROPHANOUS adj. becoming transparent when placed in water. |
| ICHTHYOSAURI | • ichthyosauri n. Plural of ichthyosaur. • ICHTHYOSAURUS n. a large fossil marine reptile, also ICHTHYOSAUR, ICHTHYOSAURIAN. |
| ICHTHYOSAURS | • ichthyosaurs n. Plural of ichthyosaur. • ICHTHYOSAUR n. a large fossil marine reptile, also ICHTHYOSAURIAN, ICHTHYOSAURUS. |
| 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. |
| HYSTERANTHOUS | • hysteranthous adj. (Botany) Having the leaves emerge after the flowers have opened. It typically refers to geophytes that… • HYSTERANTHOUS adj. having the leaves appearing after the flowers. |
| ICHTHYOSAURUS | • ichthyosaurus n. (Archaic) Alternative form of ichthyosaur. • ichthyosaurus n. Any members of the genus Ichthyosaurus. • Ichthyosaurus prop.n. A taxonomic genus within the family Ichthyosauridae – large, extinct marine reptiles. |
| 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. |
| ICHTHYOLATROUS | • ichthyolatrous adj. Fish-worshipping. • ICHTHYOLATROUS adj. worshipping fish. |
| ICHTHYOSAURIAN | • ichthyosaurian adj. (Paleontology) Of or relating to the Ichthyosauria. • ichthyosaurian n. (Paleontology) Any of the Ichthyosauria; an ichthyosaur. • ICHTHYOSAURIAN n. a large fossil marine reptile, also ICHTHYOSAUR, ICHTHYOSAURUS. |
| 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. |
| HYDROCEPHALUSES | • hydrocephaluses n. Plural of hydrocephalus. • HYDROCEPHALUS n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY. |
| ICHTHYOSAURIANS | • ichthyosaurians n. Plural of ichthyosaurian. • ICHTHYOSAURIAN n. a large fossil marine reptile, also ICHTHYOSAUR, ICHTHYOSAURUS. |
| ICHTHYOSAURUSES | • ICHTHYOSAURUS n. a large fossil marine reptile, also ICHTHYOSAUR, ICHTHYOSAURIAN. |
| 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). |