| ASPHYXIANTS | • asphyxiants n. Plural of asphyxiant. • ASPHYXIANT n. an agent causing asphyxiation. |
| EXTERNSHIPS | • externships n. Plural of externship. • EXTERNSHIP n. the position of an extern. |
| HAPAXANTHIC | • hapaxanthic adj. Being or relating to a hapaxanth. • HAPAXANTHIC adj. monocarpous, also HAPAXANTHOUS. |
| HYPEREXTEND | • hyperextend v. (Medicine) To extend a joint beyond its normal position in a way that stresses the ligaments, often causing injury. • HYPEREXTEND v. to extend so that the angle between bones of a joint is greater than normal. |
| NEPHROTOXIC | • nephrotoxic adj. That is poisonous to kidney tissue. • NEPHROTOXIC adj. poisonous to the kidney. |
| PHYTOALEXIN | • phytoalexin n. (Medicine) any of several classes of antibiotics produced by plants in response to microorganisms. • PHYTOALEXIN n. any substance produced by a plant as a defence against disease. |
| PHYTOTOXINS | • phytotoxins n. Plural of phytotoxin. • PHYTOTOXIN n. a poison produced by a plant. |
| SAXOPHONIST | • saxophonist n. A person who owns, plays or practices with the saxophone. • SAXOPHONIST n. one who plays the saxophone. |
| SEXTONSHIPS | • sextonships n. Plural of sextonship. • SEXTONSHIP n. the office of a sexton. |
| XANTHOPHYLL | • xanthophyll n. (Organic chemistry, countable) Any of various hydroxy, carbonyl or carboxylic acid derivatives of carotenes. • xanthophyll n. (Organic chemistry, uncountable) Lutein. • XANTHOPHYLL n. a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks, also XANTHOPHYL. |
| XANTHOPHYLS | • xanthophyls n. Plural of xanthophyl. • XANTHOPHYL n. a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks, also XANTHOPHYLL. |
| XANTHOPSIAS | • XANTHOPSIA n. a visual condition where things appear yellow. |
| XIPHISTERNA | • xiphisterna n. Plural of xiphisternum. • XIPHISTERNUM n. the posterior and smallest of the three divisions of the sternum. |
| XYLOPHONIST | • xylophonist n. Someone who plays a xylophone. • XYLOPHONIST n. one who plays the xylophone. |