Eccl. Obs. rare. [f. L. substrāt- (see SUBSTRATE a.) + -OR.] One of a class of penitents in the early church called substrati; = KNEELER 2 a. (Cf. PROSTRATOR 2.)
1720. Bingham, Antiquities, XVIII. i. § 1. The mourners or weepers, the hearers, the substrators, and the co-standers.
