| ANTHELIX | • anthelix n. (Anatomy) Alternative spelling of antihelix. • ANTHELIX n. (Greek) the inner curved edge of the external ear. |
| BOXTHORN | • boxthorn n. Any plant of the genus Lycium. • BOXTHORN n. a thorny shrub with red berries. |
| EXANTHEM | • exanthem n. A widespread rash usually occurring in children. • EXANTHEM n. a skin eruption, esp. accompanied by fever, also EXANTHEMA. |
| EXHALANT | • exhalant adj. Exhaling (emitting a fluid). • exhalant n. Something that emits a fluid. • EXHALANT n. a vessel that emits vapour or liquid, also EXHALENT. |
| EXHALENT | • exhalent adj. Alternative form of exhalant. • exhalent n. Alternative form of exhalant. • EXHALENT n. a vessel that emits vapour or liquid, also EXHALANT. |
| FOXHUNTS | • foxhunts n. Plural of foxhunt. • foxhunts v. Third-person singular simple present indicative form of foxhunt. • fox␣hunts n. Plural of fox hunt. |
| THYROXIN | • thyroxin n. Alternative spelling of thyroxine. • THYROXIN n. an iodine compound, a hormone forming the active principle of the thyroid gland, also THYROXINE. |
| XANTHAMS | • XANTHAM n. a gum produced by the culture fermentation of glucose, used as a stabilizer, also XANTHAN. |
| XANTHANS | • xanthans n. Plural of xanthan. • XANTHAN n. a gum produced by culture fermentation of glucose, used as a stabilizer, also XANTHAM. |
| XANTHATE | • xanthate n. (Chemistry) Any salt or ester of xanthic acid. • XANTHATE n. a salt of xanthic acid. |
| XANTHEIN | • xanthein n. (Chemistry) The water-soluble part of the yellow carotenoid pigment present in the cell sap of some plants. • XANTHEIN n. a soluble yellow colouring. |
| XANTHENE | • xanthene n. (Organic chemistry) any of a group of tricyclic heterocycles (dibenzopyrans) that are the basis for… • XANTHENE n. a white crystalline compound of carbon, hydrogen and oxygen, from which dyestuffs are derived. |
| XANTHINE | • xanthine n. (Chemistry) Any of a group of alkaloids that include caffeine, theophylline, and theobromine as well… • XANTHINE n. a white substance, structurally related to uric acid, found in muscle tissue, the liver and other organs, also XANTHIN. |
| XANTHINS | • xanthins n. Plural of xanthin. • XANTHIN n. a white substance, structurally related to uric acid, found in muscle tissue, the liver and other organs, also XANTHINE. |
| XANTHISM | • xanthism n. (Biology, zoology) A yellowish colouring of pigments in hair, skin, feathers, etc. • XANTHISM n. a condition of skin, fur or feathers in which yellow coloration predominates. |
| XANTHOMA | • xanthoma n. (Medicine) A small, yellow nodule, rich in cholesterol and other lipids, that occurs in the skin, often near a joint. • XANTHOMA n. a skin disease marked by the development of irregular yellowish patches upon the skin, esp. upon the eyelids. |
| XANTHONE | • xanthone n. (Organic chemistry) An aromatic ketone, 9-oxo-xanthene, that is used as an insecticide. • XANTHONE n. a ketone analogue of xanthene which forms the basis of various natural pigments. |
| XANTHOUS | • xanthous adj. Yellow-brown; yolk-colored. • xanthous adj. (Archaic, ethnology) Pertaining to people with yellowish, red, auburn, or brown hair. • XANTHOUS adj. yellow- or red-haired; yellow-skinned. |
| XENOLITH | • xenolith n. (Geology) any piece of rock having a different origin to that of the igneous rock in which it is found. • XENOLITH n. (Greek) a rock fragment foreign to the igneous mass in which it occurs. |