v. ac·cu·mu·lat·ed, ac·cu·mu·lat·ing, ac·cu·mu·lates
1. To gather or cause to increase; amass: We accumulated enough wood for a fire. Nearly all bank accounts accumulate interest.
2. To be the site for (a gradually increasing mass), especially as a result of disuse or neglect: Those old books are accumulating dust.
To mount or pile up; increase: Snow is accumulating on the roads. See Synonyms at gather.
[Latin accumulāre, accumulāt- : ad-, ad- + cumulāre, to pile up (from cumulus, heap; see keuə- in the Appendix of Indo-European roots).]
ac·cumu·la·ble (-lə-bəl) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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