| ANXIOUSLY | • anxiously adv. In an anxious manner; with painful uncertainty; solicitously. • ANXIOUS adv. full of fear. |
| NITROXYLS | • nitroxyls n. Plural of nitroxyl. • NITROXYL n. the group NO2, usually called the nitro group, also NITRYL. |
| NOXIOUSLY | • noxiously adv. In a noxious manner. • NOXIOUS adv. harmful to health. |
| OXYANIONS | • oxyanions n. Plural of oxyanion. • OXYANION n. an anion containing one or more oxygen atoms bonded to another element (as in the sulphate and carbonate ions). |
| OXYGENASE | • oxygenase n. (Biochemistry) An enzyme which catalyses biochemical reactions with oxygen. • OXYGENASE n. an enzyme. |
| OXYGENISE | • oxygenise v. Alternative spelling of oxygenize. • OXYGENISE v. to oxygenate, also OXYGENIZE. |
| OXYGENOUS | • oxygenous adj. (Obsolete) oxygenic. • OXYGENOUS adj. consisting of or containing oxygen. |
| OXYMORONS | • oxymorons n. Plural of oxymoron. • OXYMORON n. (Greek) a self-contradictory expression. |
| OXYTOCINS | • oxytocins n. Plural of oxytocin. • OXYTOCIN n. a pituitary hormone that stimulates uterine muscle contraction. |
| POLYAXONS | • polyaxons n. Plural of polyaxon. • POLYAXON n. a nerve cell with multiple branches. |
| PYROXENES | • pyroxenes n. Plural of pyroxene. • PYROXENE n. any of a group of minerals common in igneous rocks. |
| TEXTONYMS | • textonyms n. Plural of textonym. • TEXTONYM n. one of several words that may be keyed into a mobile phone by pressing the same sequence of buttons. |
| THYROXINS | • thyroxins n. Plural of thyroxin. • THYROXIN n. an iodine compound, a hormone forming the active principle of the thyroid gland, also THYROXINE. |
| XENOCRYST | • xenocryst n. (Geology) An isolated crystal having a different origin than the igneous rock in which it is found;… • XENOCRYST n. a crystal or mineral grain which has been taken in by magma during its upward flow. |
| XYLOIDINS | • xyloidins n. Plural of xyloidin. • XYLOIDIN n. a substance resembling pyroxylin, obtained by the action of nitric acid on starch, also XYLOIDINE. |
| XYLONITES | • xylonites n. Plural of xylonite. • XYLONITE n. a non-thermosetting plastic of the nitrocellulose type, also ZYLONITE. |