[f. CO- 3 + CAUSE.] = CONCAUSE.
1812. S. T. Coleridge, in Southey, Omniana, I. 240. Atheism … may have been a co-cause of the French revolution.
a. 1849. H. Coleridge, Ess. (1851), II. 13. That … was at least a co-cause.
