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accretion (n.)
1610s, "act of growing by organic enlargement;" 1650s as "that which is formed by continued growth from without," from Latin accretionem (nominative accretio) "an increasing, a growing larger" (as of the waxing moon), noun of action from past-participle stem of accrescere "grow progressively, increase, become greater," from ad "to" (see ad-) + crescere "grow" (from PIE root *ker- (2) "to grow"). It goes with the verb accrue. Related: Accretional; accretionary.

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Definitions of accretion
Dictionary entries near accretion
accouter
accoutrement
accredit
accreditation
accredited
accretion
accrual
accrue
acculturate
acculturation
accumulate