| RHYTHMUSES | • rhythmuses n. Plural of rhythmus. • RHYTHMUS n. (Latin) a pattern of recurrence, also RHYTHM. |
| EURHYTHMISTS | • EURHYTHMIST n. a practitioner of eurhythmics, also EURYTHMIST. |
| HYPOTHENUSES | • hypothenuses n. (Dated) plural of hypothenuse. • HYPOTHENUSE n. the longest side of a right-angled triangle, also HYPOTENUSE. |
| ICHTHYOSAURS | • ichthyosaurs n. Plural of ichthyosaur. • ICHTHYOSAUR n. a large fossil marine reptile, also ICHTHYOSAURIAN, ICHTHYOSAURUS. |
| HYPOSULPHATES | • hyposulphates n. Plural of hyposulphate. • HYPOSULPHATE n. a dithionate. |
| HYPOSULPHITES | • hyposulphites n. Plural of hyposulphite. • HYPOSULPHITE n. a salt of hyposulphurous acid. |
| HYSTERANTHOUS | • hysteranthous adj. (Botany) Having the leaves emerge after the flowers have opened. It typically refers to geophytes that… • HYSTERANTHOUS adj. having the leaves appearing after the flowers. |
| ICHTHYOSAURUS | • ichthyosaurus n. (Archaic) Alternative form of ichthyosaur. • ichthyosaurus n. Any members of the genus Ichthyosaurus. • Ichthyosaurus prop.n. A taxonomic genus within the family Ichthyosauridae – large, extinct marine reptiles. |
| ITHYPHALLUSES | • ITHYPHALLUS n. an erect phallus. |
| THOUGHTLESSLY | • thoughtlessly adv. Done without thinking. • THOUGHTLESS adv. insufficiently alert. |
| CHRYSANTHEMUMS | • chrysanthemums n. Plural of chrysanthemum. • CHRYSANTHEMUM n. any of several cultivated plants of the Chrysanthemum genus, with colourful double flower-heads. |
| HYDROSULPHATES | • hydrosulphates n. Plural of hydrosulphate. • HYDROSULPHATE n. any quaternary acid salt formed by addition of an organic base to sulphuric acid, such as aniline hydrosulphate. |
| HYDROSULPHITES | • hydrosulphites n. Plural of hydrosulphite. • HYDROSULPHITE n. a salt of hydrosulphurous acid; esp. the sodium salt, used as a reagent. |
| SPATHIPHYLLUMS | • spathiphyllums n. Plural of spathiphyllum. • SPATHIPHYLLUM n. any tropical plant of the genus Spathiphyllum, having lance-shaped leaves and fleshy white spadices of flowers in white spathes. |
| ICHTHYOSAURIANS | • ichthyosaurians n. Plural of ichthyosaurian. • ICHTHYOSAURIAN n. a large fossil marine reptile, also ICHTHYOSAUR, ICHTHYOSAURUS. |
| ICHTHYOSAURUSES | • ICHTHYOSAURUS n. a large fossil marine reptile, also ICHTHYOSAUR, ICHTHYOSAURIAN. |