Cumulative

adjective
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 relating to interest or dividends that, if not paid when due, become a prior claim for payment in the future:
cumulative preferred stocks.
adjective
1.
growing in quantity, strength, or effect by successive additions or gradual steps: cumulative pollution
2.
gained by or resulting from a gradual building up: cumulative benefits
3.
(finance)

(of preference shares) entitling the holder to receive any arrears of dividend before any dividend is distributed to ordinary shareholders
(of dividends or interest) intended to be accumulated if not paid when due

4.
(statistics)

(of a frequency) including all values of a variable either below or above a specified value
(of error) tending to increase as the sample size is increased

cumulative cu·mu·la·tive (kyōōm’yə-lā’tĭv, -yə-lə-tĭv)
adj.

Increasing or enlarging by successive addition.

Acquired by or resulting from accumulation.

Of or relating to the sum of the frequencies of experimentally determined values of a random variable that are less than or equal to a specified value.

Of or relating to experimental error that increases in magnitude with each successive measurement.