D defs.my
Entry 1 sense Webster, 1913

Cumulation

/(k?`m?-l?"sh?n)/ · Cu·mu·la·tion · IPA /ˌkjuːm.jəˈleɪ.ʃən/
01 n. The act of heaping together; a heap. See Accumulation.
  1. 1.
    The act of heaping together; a heap. See Accumulation. See: Accumulation