| CHIONODOXA | • chionodoxa n. (Botany) Any plant of the former genus Chionodoxa. • Chionodoxa prop.n. (Archaic) A former genus, now the series Scilla ser. Chionodoxa. • CHIONODOXA n. a liliaceous plant, glory-of-the-snow. |
| HEXANDRIAN | • hexandrian adj. (Botany) Having six stamens. • HEXANDRIAN adj. having six stamens, also HEXANDROUS. |
| HEXAPLOIDS | • hexaploids n. Plural of hexaploid. • HEXAPLOID n. a cell having six times the ordinary number of chromosomes. |
| HEXAPLOIDY | • hexaploidy n. The property of being hexaploid. • HEXAPLOIDY n. the state of having six times the normal number of chromosomes. |
| HEXAPODIES | • hexapodies n. Plural of hexapody. • HEXAPODY n. a line of verse with six feet. |
| HYDROTAXIS | • hydrotaxis n. (Biology) movement (of an organism or organ) in response to water. • HYDROTAXIS n. movement towards or away from water. |
| HYDROXIDES | • hydroxides n. Plural of hydroxide. • HYDROXIDE n. any compound containing an -OH group. |
| HYDROXIUMS | • HYDROXIUM n. a positive ion, H3O+, formed by the attachment of a proton to a water molecule. |
| HYDROXYLIC | • hydroxylic adj. (Chemistry) Of, pertaining to, or containing hydroxyl groups. • HYDROXYLIC adj. pertaining to a hydroxyl. |
| HYPEROXIDE | • hyperoxide n. (Inorganic chemistry) Any oxide that has a higher than normal ratio of oxygen to metal. • HYPEROXIDE adj. a compound containing a relatively large proportion of oxygen. |
| METHOXIDES | • methoxides n. Plural of methoxide. • METHOXIDE n. a saltlike compound of methanol. |
| PHENOXIDES | • phenoxides n. Plural of phenoxide. • PHENOXIDE n. a salt of a phenol, esp. in its capacity as a weak acid. |
| SULPHOXIDE | • sulphoxide n. Alternative form of sulfoxide. • SULPHOXIDE n. any compound containing a sulphinyl group and a hydrocarbon radical, also SULFOXIDE. |
| TRIHYDROXY | • trihydroxy n. (Organic chemistry, in combination) Three hydroxy groups in a molecule. • TRIHYDROXY adj. having three hydroxyl groups. |