from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A creatine anhydride, C4H7N3O, formed by the metabolism of creatine, that is found in muscle tissue and blood and normally excreted in the urine as a metabolic waste.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A heterocyclic amine 2-amino-1-methyl-5H-imidazol-4-one formed by the metabolism of creatine
from The Century Dictionary and Cyclopedia
- n. An alkaline crystallizable substance (C4H7N3O) obtained by the action of acids on creatine, and found in urine and muscle extract. Also spelled kreatinine, kreatinin.
creatin(e) + -ine2.(American Heritage® Dictionary of the English Language, Fourth Edition)