† ˈexplicatorObs.rare. Also 7 explicater. [a. L. explicātor, f.explicāre: see explicate v.] An expounder, explainer. 1677Hale Prim.Orig.Man. i. i. 10 The Supposition of Epicurus, and his Explicator, Lucretius.1697J. Sergeant Solid Philos. 36 The Explicaters of Ideas by Resemblances must be forced.