| BOROHYDRIDE | • borohydride n. (Inorganic chemistry) The anion and very strong reducing agent BH4-. • BOROHYDRIDE n. a compound of boron and hydrogen, used as a reducing agent. |
| DISHONORARY | • dishonorary adj. Causing dishonour; tending to disgrace. • DISHONORARY adj. causing dishonour. |
| FOOLHARDILY | • foolhardily adv. In a foolhardy manner. • FOOLHARDY adv. recklessly brave. |
| HYDROBROMIC | • hydrobromic adj. (Chemistry) Composed of hydrogen and bromine. • HYDROBROMIC adj. applied to an acid composed of hydrogen and bromine, hydrogen bromide. |
| HYDROCHORIC | • hydrochoric adj. (Botany) Having seeds that are dispersed by water. • HYDROCHORIC adj. of or like a hydrochore, a plant disseminated by water. |
| HYDROLOGIES | • hydrologies n. Plural of hydrology. • HYDROLOGY n. the study of water resources. |
| HYDROLOGIST | • hydrologist n. Someone who is skilled in or practises hydrology. • HYDROLOGIST n. an expert in hydrology. |
| HYDROPHOBIA | • hydrophobia n. (Pathology) An aversion to water, as a symptom of rabies; the disease of rabies itself. • hydrophobia n. (Psychology, colloquial) A morbid fear of water; aquaphobia. • HYDROPHOBIA n. the morbid fear of water, as in rabies victims. |
| HYDROPHOBIC | • hydrophobic adj. Of, or having, hydrophobia (rabies). • hydrophobic adj. (Physics, chemistry) Lacking an affinity for water; unable to absorb or to be wetted by water. • HYDROPHOBIC adj. having a morbid fear of water. |
| HYDROPONICS | • hydroponics n. The cultivation of plants in a nutrient solution rather than in the soil. • HYDROPONICS n. the practice of growing plants in a chemical solution without soil. |
| HYDROQUINOL | • HYDROQUINOL n. a white crystalline soluble phenol used as a photographic developer. |
| HYDROSCOPIC | • hydroscopic n. Misspelling of hygroscopic. • HYDROSCOPIC adj. relating to a hydroscope, also HYDROSCOPICAL. |
| HYDROTROPIC | • hydrotropic adj. (Biology) exhibiting hydrotropism. • HYDROTROPIC adj. exhibiting hydrotropism, i.e. growth in the direction of water. |
| HYDROXONIUM | • hydroxonium n. (Chemistry) The cation obtained by reacting a proton with water - H3O+; hydronium. • HYDROXONIUM n. the obsolete name for the cation H3O+ derived from protonation of water. |
| HYPERBOLOID | • hyperboloid n. A particular surface in three-dimensional Euclidean space, the graph of a quadratic with all three variables… • HYPERBOLOID n. a solid figure in which some of the plane sections are hyperbolas. |
| HYPOTHYROID | • hypothyroid adj. Of or pertaining to hypothyroidism. • hypothyroid adj. Having hypothyroidism. • HYPOTHYROID adj. affected with hypothyroidism. |
| MONOHYBRIDS | • monohybrids n. Plural of monohybrid. • MONOHYBRID n. a cross between parents differing in one heritable character. |
| ORCHIDOLOGY | • orchidology n. The study of orchids. • ORCHIDOLOGY n. the study of orchids. |
| PORPHYROIDS | • porphyroids n. Plural of porphyroid. • PORPHYROID n. a metamorphic rock having a texture characterized by large crystals set in a finer groundmass. |