[CO- 3 a.] Joint or combined agency.
1611. W. Sclater, Key (1629), 335. My coagencie and assent.
1710. W. Hume, Sacred Succession, 251. In which coagencies if any one of the ordaining bishops act with competent authority, the ordination is good.
1801. Fuseli, Lect. on Art, iii. (1848), 409. An effect derived from a cause whose union or co-agency imply in themselves no absurdity.
1858. De Quincey, Autobiog. Sk., Wks. 1862, XIV. 21. Solitude acting as a co-agency with unresisted grief.