Definition of cohesion
1
: the act or state of sticking together tightly
especially
: unity
the lack of cohesion in the Party — The Times Literary Supplement (London) cohesion among soldiers in a unit
2
: union between similar plant parts or organs
3
: molecular attraction by which the particles of a body are united throughout the mass
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Merriam-Webster unabridged
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Time Traveler for cohesion
The first known use of cohesion was in 1660
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