the GNU version of the Collaborative International Dictionary of English
n. The act driving forward or away; the act or process of propelling.
n. An impelling act or movement.
The Century Dictionary and Cyclopedia
n. The act of propelling or driving forward; impulse given.
n. In pathology, same as paralysis festinans.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the act of propelling
n. a propelling force
Word Usage
"The main propulsion system processor of the digital autopilot converts body axis and attitude error signals generated in TVC into pitch and yaw nozzle deflection commands for the main engines."