Medical Definition of avoidance
: the act or practice of keeping away from or withdrawing from something undesirable <reinforced by escape or avoidance of electric shock—E. S. Katkin & E. N. Murray> <avoidance learning>; especially : an anticipatory response undertaken to avoid a noxious stimulus <conditioned avoidance in mice>
Seen and Heard
What made you want to look up avoidance? Please tell us where you read or heard it (including the quote, if possible).