| ANTIHYDROGEN | • antihydrogen n. (Physics, uncountable) The antimatter equivalent of hydrogen, consisting of an antiproton and an positron… • antihydrogen n. (Physics, countable) An atom of the antimatter equivalent of hydrogen. • ANTIHYDROGEN n. an antimatter form of hydrogen. |
| HYDROGENASES | • hydrogenases n. Plural of hydrogenase. • HYDROGENASE n. an enzyme that catalyzes hydrogen formation in certain microorganisms. |
| HYDROGENATED | • hydrogenated v. Simple past tense and past participle of hydrogenate. • hydrogenated adj. That has been treated, or reacted with hydrogen; especially describing a saturated fat so obtained from… • HYDROGENATE v. to combine or treat with hydrogen. |
| HYDROGENATES | • hydrogenates v. Third-person singular simple present indicative form of hydrogenate. • HYDROGENATE v. to combine or treat with hydrogen. |
| HYDROGENATOR | • hydrogenator n. (Chemistry) A device that hydrogenates. • HYDROGENATOR n. an agent that hydrogenates. |
| HYDROGENISED | • hydrogenised v. Simple past tense and past participle of hydrogenise. • HYDROGENISE v. to hydrogenate, also HYDROGENIZE. |
| HYDROGENISES | • hydrogenises v. Third-person singular simple present indicative form of hydrogenise. • HYDROGENISE v. to hydrogenate, also HYDROGENIZE. |
| HYDROGENIZED | • hydrogenized v. Simple past tense and past participle of hydrogenize. • HYDROGENIZE v. to hydrogenate, also HYDROGENISE. |
| HYDROGENIZES | • hydrogenizes v. Third-person singular simple present indicative form of hydrogenize. • HYDROGENIZE v. to hydrogenate, also HYDROGENISE. |
| HYDROGEOLOGY | • hydrogeology n. The geology of groundwater, especially concerning the physical, biological and chemical properties of… • HYDROGEOLOGY n. the study of the geological action of water. |
| HYDROGRAPHER | • hydrographer n. A scientist whose speciality is hydrography. • HYDROGRAPHER n. a student of hydrography. |
| HYDROGRAPHIC | • hydrographic adj. Of or pertaining to hydrography. • HYDROGRAPHIC adj. relating to hydrography, the study of bodies of water, also HYDROGRAPHICAL. |
| MONOHYDROGEN | • monohydrogen n. (Chemistry, in combination) A single hydrogen atom in a compound. • MONOHYDROGEN adj. designating compounds containing one hydrogen atom or ion for each combining radical or ion, e.g. disodium monohydrogen orthophosphate. |
| OXYHYDROGENS | • OXYHYDROGEN n. a mixture of hydrogen and oxygen used to provide an intense flame for welding. |
| PARAHYDROGEN | • parahydrogen n. (Physics) The form of the hydrogen molecule (H2) in which the two nuclei have antiparallel spin; about… • PARAHYDROGEN n. a spin isomer of hydrogen. |