| HYDROXYLASE | • hydroxylase n. (Biochemistry) Any of several enzymes that catalyze the oxidation of compounds by the introduction of hydroxyl groups. • HYDROXYLASE n. any of a group of enzymes that catalyze oxidation reactions. |
| OXYSULPHIDE | • oxysulphide n. Alternative form of oxysulfide. • OXYSULPHIDE n. a compound containing an element combined with oxygen and sulphur. |
| PHYLLOTAXES | • phyllotaxes n. Plural of phyllotaxis. • PHYLLOTAXIS n. the arrangement of leaves on a stem and in relation to one another, also PHYLLOTAXY. |
| PHYLLOTAXIS | • phyllotaxis n. (Botany) The arrangement of leaves on a stem, or the mathematical principles governing such arrangement. • PHYLLOTAXIS n. the arrangement of leaves on a stem and in relation to one another, also PHYLLOTAXY. |
| PHYLLOXERAS | • phylloxeras n. Plural of phylloxera. • PHYLLOXERA n. a kind of beetle, a pest of vineyards. |
| POMPHOLYXES | • POMPHOLYX n. (Greek) a vesicular eruption or eczema chiefly on the palms and soles. |
| PROPHYLAXES | • prophylaxes n. Plural of prophylaxis. • PROPHYLAXIS n. preventive treatment against diseases, etc. |
| PROPHYLAXIS | • prophylaxis n. (Medicine) Prevention of, or protective treatment for, disease. • prophylaxis n. (Chess) A move or strategy that frustrates an opponent’s plan or tactic. • PROPHYLAXIS n. preventive treatment against diseases, etc. |
| SCEUOPHYLAX | • sceuophylax n. A sacristan or church treasurer. • SCEUOPHYLAX n. a sacristan. |
| XANTHOPHYLS | • xanthophyls n. Plural of xanthophyl. • XANTHOPHYL n. a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks, also XANTHOPHYLL. |
| XYLOCHROMES | • xylochromes n. Plural of xylochrome. • XYLOCHROME n. a mixture of substances to which the colour of heartwood is due. |
| XYLOPHAGANS | • xylophagans n. Plural of xylophagan. • XYLOPHAGAN n. one of a tribe of beetles whose larvae bore or live in wood. |
| XYLOPHAGOUS | • xylophagous adj. Feeding on wood. (Of insects etc.) • xylophagous adj. Destructive to wood. (Of fungi etc.) • XYLOPHAGOUS adj. wood-eating. |
| XYLOPHILOUS | • xylophilous adj. Living on or in wood, as some fungi and beetles do. • XYLOPHILOUS adj. fond of wood; living in or on wood. |
| XYLOPHONIST | • xylophonist n. Someone who plays a xylophone. • XYLOPHONIST n. one who plays the xylophone. |