capillary action(redirected from Capillary motion)
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capillary actionThe spontaneous movement of a liquid up thin tubes, due to adhesive and cohesive forces and surface tension.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
A surface tension effect shown by the elevation or depression of a liquid at the region of contact with a solid, as in capillary tubes.Synonym: capillarity
See also: action
Medical Dictionary, © 2009 Farlex and Partners