I. verb — [with obj.] 1. gather together or acquire an increasing number or quantity of • investigators have yet to accumulate enough evidence.
2. gradually gather or acquire (a resulting whole) • her goal was to accumulate a huge fortune.
3. [no obj.] — gather; build up • the toxin accumulated in their bodies.
– origin late 15th cent.: from Latin accumulat- ‘heaped up’, from the verb accumulare, from ad- ‘to’ + cumulus ‘a heap’.