from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An enzyme in certain microorganisms that catalyzes the hydrolysis or reduction of a substrate by molecular hydrogen.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any enzyme that catalyzes the formation of hydrogen, or the reversible oxidation of hydrogen.
from The Century Dictionary and Cyclopedia
- n. A type of reducing ferment.
Sorry, no etymologies found.