Obs. rare–1.
1742. Young, Nt. Th., IX. 1422. What order, beauty, motion, distance, size! Concertion of design, how exquisite!
[So the first and most edd., including that of 1787 with Glossary, where the word is explained as = ‘contrivance.’ If so, it is irregularly formed from concert vb.; but some edd., e.g., one of 1751, have consertion [cf. L. consertio joining together], and some, according to Richardson, conception.]
