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Webster 1913 Edition

Adj.

Characterized by accumulation; serving to collect or amass; cumulative; additional.

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Ac-cu′mu-la-tive-ly

adv.

–

Ac-cu′mu-la-tive-ness

Noun.

Adj.

That accumulates; heaping up; accumulating.

accumulative ‎(comparative more accumulative, superlative most accumulative)

Characterized by accumulation; serving to collect or amass; cumulative; additional.
Having a propensity to amass; acquisitive.

serving to collect or amass