from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a logical relation between propositions p and q of the form `if p then q'; if p is true then q cannot be false
Sorry, no etymologies found.
The quest for perpetual motion was abandoned, for the logical implication of the concept of efficiency is that restoration, or recov - ery, of the initial situation is the utmost that can be expected even of an ideal engine.