| CANTHAXANTHINES | • CANTHAXANTHINE n. a naturally occurring carotenoid used esp. as a color additive for food, also CANTHAXANTHIN. |
| CHEMOTAXONOMIES | • chemotaxonomies n. Plural of chemotaxonomy. • CHEMOTAXONOMY n. the classification of plants and animals based on similarities and differences in biochemical composition. |
| CHEMOTAXONOMIST | • chemotaxonomist n. One who studies chemotaxonomy. • CHEMOTAXONOMIST n. one who practises chemotaxonomy. |
| DEXAMPHETAMINES | • DEXAMPHETAMINE n. the dextrorotatory isomer of amphetamine, used as a stimulant. |
| EXCHANGEABILITY | • exchangeability n. The condition of being exchangeable. • EXCHANGEABILITY n. the state of being exchangeable. |
| HETEROSEXUALITY | • heterosexuality n. The state of being sexually and romantically attracted primarily or exclusively to persons of the opposite sex. • heterosexuality n. Sexual activity with a person of the opposite sex. • HETEROSEXUALITY n. the state of being heterosexual. |
| HOMOSEXUALITIES | • homosexualities n. Plural of homosexuality. • HOMOSEXUALITY n. the state of being homosexual. |
| HYDROXYAPATITES | • hydroxyapatites n. Plural of hydroxyapatite. • HYDROXYAPATITE n. a complex phosphate of calcium that occurs as a mineral and is the chief structural element of vertebrate bone. |
| HYDROXYLAPATITE | • hydroxylapatite n. Alternative spelling of hydroxyapatite. • HYDROXYLAPATITE n. a mineral of the apatite group that is rare in the ground but is the principal inorganic constituent of tooth enamel and bone. |
| LEXICOGRAPHISTS | • lexicographists n. Plural of lexicographist. • LEXICOGRAPHIST n. one who makes dictionaries. |
| METHYLXANTHINES | • methylxanthines n. Plural of methylxanthine. • METHYLXANTHINE n. a methylated xanthine derivative, such as caffeine, theobromine, or theophylline. |
| PHOTOEXCITATION | • photoexcitation n. (Chemistry) The formation of an excited state by the absorption of a photon. • PHOTOEXCITATION n. the process of exciting the atoms or molecules of a substance by the absorption of radiant energy. |
| PSYCHOSEXUALITY | • psychosexuality n. The psychological aspects of sexuality. • PSYCHOSEXUALITY n. the psychic factors of sex. |