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Related to capillarity: surface tension
(General Physics) a phenomenon caused by surface tension and resulting in the distortion, elevation, or depression of the surface of a liquid in contact with a solid. Also called: capillary action
cap•il•lar•i•ty(ˌkæp əˈlær ɪ ti)
the elevation or depression of part of a liquid surface coming in contact with a solid.
The rise or fall of a liquid in a narrow tube, caused by the relative attraction of its molecules for each other and the tube wall.