from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Either of two protein subunits of a myosin molecule, obtained especially through the digestive action of trypsin.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Either of the two subunits of myosin that are formed by the action of trypsin
mero- + myosin (Wiktionary)