| AUXOTROPHIES | • auxotrophies n. Plural of auxotrophy. • AUXOTROPHY n. the state of being auxotrophic, requiring a specific growth substance beyond the minimum required for normal metabolism. |
| EXECUTORSHIP | • executorship n. The office or position of an executor. • EXECUTORSHIP n. the office of executor. |
| EXTINGUISHER | • extinguisher n. One who, or that which, extinguishes something. • EXTINGUISHER n. a device that extinguishes. |
| HETERAUXESES | • HETERAUXESIS n. unsymmetrical growth. |
| HETERAUXESIS | • heterauxesis n. (Botany) unequal growth of a cell, or of part of a plant. • HETERAUXESIS n. unsymmetrical growth. |
| HETEROAUXINS | • heteroauxins n. Plural of heteroauxin. • HETEROAUXIN n. a natural plant hormone, used esp. for stimulating growth and root formation in plant cutting. |
| HETEROSEXUAL | • heterosexual adj. Sexually attracted to members of the opposite sex. • heterosexual n. A heterosexual person, or other heterosexual organism. • HETEROSEXUAL adj. attracted to the opposite sex. |
| HYDROXONIUMS | • hydroxoniums n. Plural of hydroxonium. • HYDROXONIUM n. the obsolete name for the cation H3O+ derived from protonation of water. |
| HYDROXYUREAS | • hydroxyureas n. Plural of hydroxyurea. • HYDROXYUREA n. a drug used to treat some forms of leukemia, melanoma, and malignant tumors. |
| PYRRHULOXIAS | • pyrrhuloxias n. Plural of pyrrhuloxia. • PYRRHULOXIA n. a grey-and-pink crested bunting of Central and SW North America, with a short parrot-like bill. |
| SUPERHELIXES | • superhelixes n. Plural of superhelix. • SUPERHELIX n. a helix, as of DNA, which has its axis arranged in a helical coil. |
| THUNDERBOXES | • thunderboxes n. Plural of thunderbox. • thunder-boxes n. Plural of thunder-box (alternative form of thunderboxes). • thunder␣boxes n. Plural of thunder box (alternative form of thunderboxes). |
| UNORTHODOXES | Sorry, definition not available. |
| XERANTHEMUMS | • xeranthemums n. Plural of xeranthemum. • XERANTHEMUM n. any plant of the Xeranthemum genus of plants of southern Europe, belonging to the thistle family. |
| XEROMORPHOUS | • xeromorphous adj. Xeromorphic. • XEROMORPHOUS adj. of parts of a plant, protected against excessive loss of water by thick cuticles, coatings of hairs and similar structural features, also XEROMORPHIC. |
| XIPHISTERNUM | • xiphisternum n. (Biology, medicine) Synonym of xiphoid process. • XIPHISTERNUM n. the posterior and smallest of the three divisions of the sternum. |