[ suhk-shuh n ]
/ ˈsʌk ʃən /


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.

verb (used with object)

to draw out or remove by aspiration.

Nearby words

  1. sucre, antonio josé de,
  2. sucrose,
  3. sucrose polyester,
  4. sucrosemia,
  5. sucrosuria,
  6. suction and curettage,
  7. suction cup,
  8. suction drainage,
  9. suction lipectomy,
  10. suction pump

Origin of suction

1605–15; < Late Latin sūctiōn- (stem of sūctiō) a sucking, equivalent to Latin sūct(us) (past participle of sūgere to suck) + -iōn- -ion

Related formssuc·tion·al, adjectivenon·suc·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for suction

British Dictionary definitions for suction


/ (ˈsʌkʃən) /


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
Derived Formssuctional, adjective

Word Origin for suction

C17: from Late Latin suctiō a sucking, from Latin sūgere to suck

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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

Science definitions for suction


[ sŭkshən ]

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.