Pronunciation: (kyOO'myu-lu-tiv, -lā"tiv), [key]
1. increasing or growing by accumulation or successive additions: the cumulative effect of one rejection after another.
2. formed by or resulting from accumulation or the addition of successive parts or elements.
3. of or pertaining to interest or dividends that, if not paid when due, become a prior claim for payment in the future: cumulative preferred stocks.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.