The Collaborative International Dictionary of English. 2000.
adunation — … Useful english dictionary
Coadunate — Co*ad u*nate (?; 135), a. [L. coadunatus, p. p. of coadunare to unite. See {Adunation}.] (Bot.) United at the base, as contiguous lobes of a leaf. [1913 Webster] … The Collaborative International Dictionary of English