from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A polypeptide, C10H17N3O6S, of glycine, cysteine, and glutamic acid that occurs widely in plant and animal tissues and is important in biological oxidation-reduction reactions.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A tripeptide formed from glutamic acid, cysteine and glycine, that is active in many biological redox reactions
gluta(mine) + thi(o)- + -one.(American Heritage® Dictionary of the English Language, Fourth Edition)
gluta- + thione (Wiktionary)