| HYDATID | • hydatid n. A cyst due to infection by larvae of some species of the tapeworm Echinococcus. • HYDATID n. a fluid-filled cyst, esp. one containing tapeworm larva. |
| HYDRANT | • hydrant n. An outlet from a liquid/fluid main often consisting of an upright pipe with a valve attached from which… • HYDRANT n. an outlet from a water main. |
| HYDRASE | • hydrase n. (Chemistry) An enzyme that catalyzes the addition of water. • HYDRASE n. an enzyme that speeds up the removal or addition of water in a chemical reaction. |
| HYDRATE | • hydrate n. (Chemistry) A solid compound containing or linked to water molecules. • hydrate n. (Inorganic chemistry, rare) Water. • hydrate v. (Transitive) To take up, consume or become linked to water. |
| HYDRIAE | • hydriae n. Plural of hydria. • HYDRIA n. (Greek) a large Greek water-vase. |
| HYDRIDE | • hydride n. (Inorganic chemistry) A compound of hydrogen with a more electropositive element. • HYDRIDE n. any compound of hydrogen with another element, also HYDRID. |
| HYDRIDS | • hydrids n. Plural of hydrid. • HYDRID n. any compound of hydrogen with another element, also HYDRIDE. |
| HYDROID | • hydroid n. Any of many colonial coelenterates that exist mainly as a polyp; a hydrozoan. • hydroid adj. Of or pertaining to such creatures. • HYDROID n. a marine creature related to, or resembling, the hydra. |
| HYDROMA | • HYDROMA n. a watery swelling over a joint, e.g. water on the knee, also HYGROMA. |
| HYDROPS | • hydrops n. (Medicine) The abnormal accumulation of serous fluid in a tissue or cavity. • HYDROPS n. (Greek) dropsy, also HYDROPSY. |
| HYDROUS | • hydrous adj. (Chemistry) Containing combined water; hydrated. • HYDROUS adj. containing water. |
| HYDROXY | • hydroxy adj. (Chemistry) Being, or containing a hydroxyl radical. • hydroxy n. (Informal, pharmacology) Clipping of hydroxychloroquine. • hydroxy- pref. (Chemistry) having, or derived from, a hydroxyl radical. |
| HYDYNES | • HYDYNE n. a rocket-launching fuel. |
| WHYDAHS | • whydahs n. Plural of whydah. • WHYDAH n. a group of African birds related to the finch, also WHIDAH, WHYDA. |