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Dictionary


ad•he•sion



Pronunciation: (ad-hē'zhun), [key]
n.
1. the act or state of adhering; state of being adhered or united: the adhesion of parts united by growth.
2. steady or devoted attachment, support, etc.; adherence.
3. assent; concurrence.
4. Physics.the molecular force of attraction in the area of contact between unlike bodies that acts to hold them together. Cf. cohesion (def. 2).
5. Pathol.
a. the abnormal union of adjacent tissues.
b. the tissue involved.
6. Bot.the union of normally separate parts.
7. Railroads.
a. the frictional resistance of rails to the tendency of driving wheels to slip.
b. See factor of adhesion.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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