'Coaction' definitions:

Definition of 'coaction'

From: WordNet
noun
Act of working jointly; "they worked either in collaboration or independently" [syn: collaboration, coaction]

Definition of 'Coaction'

From: GCIDE
  • Coaction \Co*ac"tion\, n. [L. coactio.] Force; compulsion, either in restraining or impelling. --Sojth. [1913 Webster]