Cumulate \Cu"mu*late\ (k?"m?-l?t), v. t. [imp. & p. p. {Cumulated} (-l?`t?d); p. pr. & vb. n. {Cumulating} (-l?`t?ng).] [L. cumulatus, p. p. of cumulare to heap up, fr. cumulus a heap. See {Cumber}.] To gather or throw into a heap; to heap together; to accumulate. Shoals of shells, bedded and cumulated heap upon heap. --Woodward.