accumulate
ac•cu•mu•late (əkyōm´yōlāt´, -yə-) vt., vi. -lat´ed, -lat´ing
[[< L accumulatus, pp. of accumulare < ad-, to + cumulare, to heap: see CUMULUS]]
to pile up, collect, or gather together, esp. over a period of time—ac•cu´mu•la•ble (-ləbəl) adj.
