Etymology
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cohesion (n.)

1670s, "act or state of sticking together," from French cohsion, from Latin cohaesionem (nominative cohaesio) "a sticking together," noun of action from past participle stem of cohaerere "to stick together," from assimilated form of com "together" (see co-) + haerere "to adhere, stick" (see hesitation).

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Definitions of cohesion

cohesion (n.)
the state of cohering or sticking together;
Synonyms: coherence / coherency / cohesiveness
cohesion (n.)
(botany) the process in some plants of parts growing together that are usually separate (such as petals);
cohesion (n.)
(physics) the intermolecular force that holds together the molecules in a solid or liquid;
From wordnet.princeton.edu