from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The act or process of sucking.
  • n. A force that causes a fluid or solid to be drawn into an interior space or to adhere to a surface because of the difference between the external and internal pressures.
  • transitive v. To draw away or remove by the force of suction: suction fluid from the lungs.
  • transitive v. To clean or evacuate (a body cavity, for example) by the force of suction.
  • adj. Creating suction.
  • adj. Operating or operated by suction.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The principle of physics by which matter is drawn from one space into another because the pressure inside the second space is lower than the pressure in the first.
  • n. The principle of physics by which one item is caused to adhere to another because the pressure in the space between the items is lower than the pressure outside that space.
  • n. The process of creating an imbalance in pressure to draw matter from one place to another.
  • v. To create an imbalance in pressure between one space and another in order to draw matter between the spaces.
  • v. To draw out the contents of a space.
  • adj. Of or relating to something that operates by the principle of creating an imbalance in pressure to draw matter from one place to another.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act or process of sucking; the act of drawing, as fluids, by exhausting the air.

from The Century Dictionary and Cyclopedia

  • n. The process or condition of sucking; the removal of air or gas from any interior space producing a diminution of pressure which induces an inrush of gas or liquid to restore the equilibrium.
  • n. The downward strain in a plow due to the depression given the share point in order to secure penetration. In a walking plow the suction is measured by the distance between the landside and a straight-edge touching the point of the share and the heel of the landside. Also suck.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. remove or draw away by the force of suction
  • n. the act of sucking
  • v. empty or clean (a body cavity) by the force of suction
  • n. a force over an area produced by a pressure difference


from The American Heritage® Dictionary of the English Language, 4th Edition

Late Latin sūctiō, sūctiōn-, from Latin sūctus, past participle of sūgere, to suck; see seuə-2 in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin sugere (to suck)


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