| EXECUTORSHIPS | • executorships n. Plural of executorship. • EXECUTORSHIP n. the office of executor. |
| EXHEREDATIONS | • exheredations n. Plural of exheredation. • EXHEREDATION n. the act of exheredating, disinheriting. |
| EXHIBITIONERS | • exhibitioners n. Plural of exhibitioner. • EXHIBITIONER n. a university student who has been awarded an exhibition at a university. |
| EXHILARATIONS | • exhilarations n. Plural of exhilaration. • EXHILARATION n. the action of exhilarating. |
| EXTINGUISHERS | • extinguishers n. Plural of extinguisher. • EXTINGUISHER n. a device that extinguishes. |
| EXTREMOPHILES | • extremophiles n. Plural of extremophile. • EXTREMOPHILE n. an organism that lives under extreme environmental conditions. |
| HETEROSEXISMS | • heterosexisms n. Plural of heterosexism. • HETEROSEXISM n. the belief that homosexuality is a perversion. |
| HETEROSEXISTS | • heterosexists n. Plural of heterosexist. • HETEROSEXIST n. one who believes that homosexuality is a perversion. |
| HEXAMETRISING | • HEXAMETRISE v. to put into hexameters, also HEXAMETRIZE. |
| HEXOBARBITALS | • HEXOBARBITAL n. a barbiturate used as a sedative and hypnotic. |
| UNORTHODOXIES | • unorthodoxies n. Plural of unorthodoxy. • UNORTHODOXY n. the state of being unorthodox. |
| XANTHOCHROIAS | • XANTHOCHROIA n. yellowness of the skin. |
| XANTHOCHROIDS | • xanthochroids n. Plural of xanthochroid. • XANTHOCHROID n. a blond-haired and blue eyed person with fair white skin. |
| XANTHOCHROISM | • xanthochroism n. Alternative form of xanthochromism. • XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear. |
| XANTHOPTERINS | • xanthopterins n. Plural of xanthopterin. • XANTHOPTERIN n. a yellow pigment obtainable from the wings of yellow butterflies and the urine of mammals, also XANTHOPTERINE. |
| XIPHIPLASTRAL | • xiphiplastral adj. Relating to a xiphiplastron. • XIPHIPLASTRAL n. a type of chelonian. |
| XIPHIPLASTRON | • xiphiplastron n. The posterior, or fourth lateral plate in the plastron of a turtle. • XIPHIPLASTRON n. in chelonians, one of the plates forming the plastron, lying posterior to the hypoplastron. |
| XIPHISTERNUMS | • xiphisternums n. Plural of xiphisternum. • XIPHISTERNUM n. the posterior and smallest of the three divisions of the sternum. |