from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A motor that controls the action of the mechanical device in a servomechanism.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An electric motor in a servomechanism, especially one which incorporates feedback so it accurately positions the device.
French servomoteur : Latin servus, slave + French moteur, motor (from Old French, from Latin mōtor, that which sets in motion; see motor).(American Heritage® Dictionary of the English Language, Fourth Edition)
From French servo-moteur, from Latin servus ("slave") + motor ("mover"). (Wiktionary)