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Webster 1913 Edition

Noun.

[L.

acervatio

A heaping up; accumulation.

[R.]

Johnson.

acervation ‎(plural acervations)

(obsolete, rare) A heaping up; accumulation
(Can we find and add a quotation of Johnson to this entry?)
- 1620, Thomas Lodge (tr.), chapter 2, in Works, both Moral and Natural, Of Naturall Questions, London, translation of original by Lucius Annaeus Seneca (Philosophus), page 782:
  Is it to be doubted that amongst these bodies which both we see and handle, which are either felt or feele, but that there are some compound? These are such by connexion or aceruation, as for example, a rope, corne, or a ship.

a heaping up; accumulation