- the act, process, or condition of sucking.
- the force that, by a pressure differential, attracts a substance or object to the region of lower pressure.
- the act or process of producing such a force.
- to draw out or remove by aspiration.
Origin of suction
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for suction
The tube was to be inserted so it could suction out the blood and air packed in the chest and prevent the lung from collapsing.Jimmy Breslin on JFK’s Assassination: Two Classic Columns
November 22, 2013
A series of suction cups or sucking pads were at the end of each tentacle.Martians Never Die
Even the slain deer was already beginning to yield to the suction from beneath.The Fiery Totem
What must have been holding the suction cap against the inside of the jar?Common Science
Carleton W. Washburne
The water may be drawn out by means of suction through a reed.Old-Time Makers of Medicine
James J. Walsh
I could see a respirator off to my right, and a suction octopus near it.Attrition
- the act or process of sucking
- the force or condition produced by a pressure difference, as the force holding a suction cap onto a surface
- the act or process of producing such a force or condition
C17: from Late Latin suctiō a sucking, from Latin sūgere to suck
Word Origin and History for suction
1620s, from Late Latin suctionem (nominative suctio), noun of action from past participle stem of Latin sugere "to suck" (see suck).
Online Etymology Dictionary, © 2010 Douglas Harper
- A force acting on a fluid caused by difference in pressure between two regions, tending to make the fluid flow from the region of higher pressure to the region of lower pressure.
- The act of reducing pressure to create such a force, as by the use of a pump or fan.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.