Pronunciation: (as'pu-rā"tur), [key]
1. an apparatus or device employing suction.
2. Hydraul.a suction pump that operates by the pressure differential created by the high-speed flow of a fluid past an intake orifice.
3. Med.an instrument for removing body fluids by suction.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.