Medical Definition of aspiration
: a drawing of something in, out, up, or through by or as if by suction: asa: the act of breathing and especially of breathing inb: the withdrawal of fluid or friable tissue from the bodyc: the taking of foreign matter into the lungs with the respiratory current
Seen and Heard
What made you want to look up aspiration? Please tell us where you read or heard it (including the quote, if possible).