| HALOPHYTES | • halophytes n. Plural of halophyte. • HALOPHYTE n. a plant found growing in salt marshes, or in the sea. |
| HELOPHYTES | • helophytes n. Plural of helophyte. • HELOPHYTE n. any perennial marsh plant that bears its overwintering buds in the mud below the surface. |
| HEMOLYMPHS | • hemolymphs n. Plural of hemolymph. • HEMOLYMPH n. the circulatory fluid of various invertebrate animals, also HAEMOLYMPH. |
| HOBBYHORSE | • hobbyhorse n. Alternative spelling of hobby horse. • hobby-horse n. Alternative spelling of hobby horse. • hobby␣horse n. (Originally) The Irish hobby, an extinct breed of horse. |
| HOLOPHYTES | • holophytes n. Plural of holophyte. • HOLOPHYTE n. a plant maintained entirely by its own organs. |
| HORNYHEADS | • hornyheads n. Plural of hornyhead. • HORNYHEAD n. a North American river chub. |
| HYDATHODES | • hydathodes n. Plural of hydathode. • HYDATHODE n. an epidermal water-excreting organ. |
| HYLOPHYTES | • HYLOPHYTE n. a woodland plant. |
| HYLOTHEISM | • hylotheism n. Theory equating matter with God or merging one into the other (see pantheism). • hylotheism n. Doctrine of belief that matter is God, or that there is no God except matter and the universe (see materialism). • HYLOTHEISM n. the doctrine that there is no God but matter and the universe. |
| HYLOTHEIST | • hylotheist n. A proponent of hylotheism. • HYLOTHEIST n. one who identifies God with matter or universe. |
| HYPOPHYGES | • HYPOPHYGE n. the curve where a column merges in its base or capital. |
| HYPOPHYSES | • hypophyses n. Plural of hypophysis. • HYPOPHYSIS n. the pituitary gland. |
| HYPOTHESES | • hypotheses n. Plural of hypothesis. • HYPOTHESIS n. a supposition, an assumption. |
| HYPOTHESIS | • hypothesis n. (Sciences) Used loosely, a tentative conjecture explaining an observation, phenomenon or scientific… • hypothesis n. (General) An assumption taken to be true for the purpose of argument or investigation. • hypothesis n. (Grammar) The antecedent of a conditional statement. |
| HYPSOPHOBE | • HYPSOPHOBE n. a person suffering from hypsophobia, a fear of falling from high places. |
| ICHTHYOSES | • ichthyoses n. Plural of ichthyosis. • ICHTHYOSIS n. a disease in which the skin is thick, rough, and scaly. |
| LITHOPHYSE | • lithophyse n. (Mineralogy) A spherulitic cavity, often with concentric chambers, observed in some volcanic rocks… • LITHOPHYSE n. a bladderlike spherulite, also LITHOPHYSA. |
| YOUTHHEADS | • YOUTHHEAD n. (obsolete) youth, also YOUNGTH, YOUTHHOOD. |