from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The medical study of the mouth and its diseases.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the study of the mouth and its disorders and diseases.
from the GNU version of the Collaborative International Dictionary of English
- n. Scientific study or knowledge of the mouth.
from The Century Dictionary and Cyclopedia
- n. The sum of scientific knowledge concerning the mouth.
Ancient Greek στόμα ("mouth") + -ology (Wiktionary)