| ANHYDRASES | • anhydrases n. Plural of anhydrase. • ANHYDRASE n. an enzyme that catalyses the removal of water. |
| ANHYDRIDES | • anhydrides n. Plural of anhydride. • ANHYDRIDE n. a compound derived from an acid by the removal of one or more molecules of water. |
| ANHYDRITES | • anhydrites n. Plural of anhydrite. • ANHYDRITE n. an anhydrous sulphate of lime, differing from gypsum in not containing water (whence the name). |
| ERYTHRINAS | • erythrinas n. Plural of erythrina. • ERYTHRINA n. a plant of the kaffirboom genus of tropical and subtropical trees with brilliant red flowers. |
| GYNARCHIES | • gynarchies n. Plural of gynarchy. • GYNARCHY n. government by women. |
| HONEYTRAPS | • honeytraps n. Plural of honeytrap (alternative spelling of honey traps). • honey␣traps n. Plural of honey trap. • HONEYTRAP n. a scheme in which a victim is lured into a compromising sexual situation giving opportunities for blackmail. |
| HORNYHEADS | • hornyheads n. Plural of hornyhead. • HORNYHEAD n. a North American river chub. |
| HYDRANGEAS | • hydrangeas n. Plural of hydrangea. • HYDRANGEA n. a plant of the Hydrangea genus of shrubby plants. |
| HYDRASTINE | • hydrastine n. (Organic chemistry) A natural alkaloid present in goldenseal. • HYDRASTINE n. a white poisonous alkaloid extracted from the roots of the goldenseal, which has been used in medicine to contract the uterus and arrest haemorrhage. |
| HYDRAZINES | • hydrazines n. Plural of hydrazine. • HYDRAZINE n. a colourless basic liquid made from sodium hypochlorite and ammonia, used chiefly as a rocket fuel. |
| HYDROVANES | • hydrovanes n. Plural of hydrovane. • HYDROVANE n. a hydrofoil. |
| HYPERNOVAS | • hypernovas n. Plural of hypernova. • HYPERNOVA n. an exploding star than produces even more energy and light than a supernova. |
| HYPERPNEAS | • hyperpneas n. Plural of hyperpnea. • HYPERPNEA n. abnormally fast breathing, also HYPERPNOEA. |
| PHEASANTRY | • pheasantry n. (Zoology) A place for keeping and rearing pheasants. • PHEASANTRY n. a place for keeping and rearing pheasants. |
| SANDCHERRY | • sand␣cherry n. Prunus pumila, a North American cherry in the rose family, growing in sandy locations. |
| SYNARCHIES | • synarchies n. Plural of synarchy. • SYNARCHY n. joint sovereignty. |