Webster's Revised Unabridged Dictionary · 1913

Accumulation

Accumulation ({not transcribed}) , noun

[Latin accumulatio; compare French accumulation.]

1.
The act of accumulating, the state of being accumulated, or that which is accumulated; as, an accumulation of earth, of sand, of evils, of wealth, of honors.
2.
(Law) The concurrence of several titles to the same proof.
Collocations (2)
Accumulation of energy or power , the storing of energy by means of weights lifted or masses put in motion; electricity stored.
An accumulation of degrees (Eng. Univ.) , the taking of several together, or at smaller intervals than usual or than is allowed by the rules.