| GAMETOPHYTE | • gametophyte n. (Botany) A plant (or the haploid phase in its life cycle) which produces gametes by mitosis in order… • GAMETOPHYTE n. the haploid stage in the life cycle of an organism undergoing alternations of generations. |
| GNETOPHYTES | • gnetophytes n. Plural of gnetophyte. • GNETOPHYTE n. a type of plant including welwitschia. |
| HERESIOLOGY | • heresiology n. The study of heresy. • HERESIOLOGY n. the study of heresies. |
| HERPETOLOGY | • herpetology n. The branch of biology dealing with reptiles (Reptilia) and amphibians. • HERPETOLOGY n. the study of reptiles and amphibians. |
| HOMOGENEITY | • homogeneity n. The condition of being homogeneous. • HOMOGENEITY n. the state of being homogeneous. |
| HONEYGUIDES | • honeyguides n. Plural of honeyguide. • honey␣guides n. Plural of honey guide. • HONEYGUIDE n. an African bird that guides men and ratels to honey. |
| HYDROGENASE | • hydrogenase n. (Biochemistry) Any enzyme that catalyzes the reduction of a substrate by the reversible oxidation of hydrogen. • HYDROGENASE n. an enzyme that catalyzes hydrogen formation in certain microorganisms. |
| HYDROGENATE | • hydrogenate v. (Chemistry, transitive) to treat something, or react something, with hydrogen; especially to react an… • HYDROGENATE v. to combine or treat with hydrogen. |
| HYDROGENISE | • hydrogenise v. (Transitive, British spelling, dated) Alternative spelling of hydrogenize. • HYDROGENISE v. to hydrogenate, also HYDROGENIZE. |
| HYDROGENIZE | • hydrogenize v. (Transitive, chemistry, dated) to hydrogenate. • HYDROGENIZE v. to hydrogenate, also HYDROGENISE. |
| HYETOLOGIES | • HYETOLOGY n. the science of rainfall. |
| HYGROMETERS | • hygrometers n. Plural of hygrometer. • HYGROMETER n. an instrument for measuring air moisture. |
| HYLOGENESES | • HYLOGENESIS n. the origin of matter. |
| HYLOGENESIS | • hylogenesis n. (Philosophy) The origin of matter. • HYLOGENESIS n. the origin of matter. |
| HYPNOGENIES | • HYPNOGENY n. production of the hypnotic state, also HYPNOGENESIS. |
| HYSTEROGENY | • HYSTEROGENY n. the generation of hysteria. |
| PHYLOGENIES | • phylogenies n. Plural of phylogeny. • PHYLOGENY n. the evolutionary development of a species, a group of organisms, or a particular feature of an organism. |
| PHYTOGENIES | • phytogenies n. Plural of phytogeny. • PHYTOGENY n. the doctrine of the generation of plants. |
| ZYGOSPHENES | • zygosphenes n. Plural of zygosphene. • ZYGOSPHENE n. a median process on the front part of the neural arch of the vertebrae of most snakes and some lizards, which fits into a fossa, called the zygantrum, on the back part of the arch in front. |