Definition of coaction in US English:

coaction

noun

  • The action or process of working or acting together; cooperation.

    • ‘The dataset indicates that the bottom mixed layer itself and in coaction with passing internal waves effectively controls the communication between interior water column and sediment.’
    • ‘UV exerts its action through the coaction of UV photoreceptors and photoreceptors in the visible region.’
    • ‘I am persuaded a more powerful impulse to polytheism arises from the co-action of two natural principles in the absence of a knowledge of God in Christ.’
    • ‘The materialist logic of neorealism supposes that units come first, that their coaction makes a structured system.’
    • ‘The truth is, man's original dispositions are spontaneous; they subsist and operate in him freely, without co-action.’
    collaboration, working together, joint action, combined effort, teamwork, mutual support, partnership, coopetition, coordination, liaison, association, synergy, unity, concurrence, concord, accord, understanding, give and take, compromise
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Pronunciation

coaction

/ˌkōˈakSH(ə)n//ˌkoʊˈækʃ(ə)n/