from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An enzyme that catalyzes the hydrolysis of ATP to ADP, releasing energy that is used in the cell; adenosine triphosphatase.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A type of enzyme which works to convert adenosine triphosphate (ATP) into adenosine diphosphate (ADP) and a free phosphate ion, thereby releasing energy to be used in cellular activity.
From ATP + -ase. (Wiktionary)