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English definition of “accretion”

accretion

noun [C or U]     /əˈkriː.ʃən/ formal
a gradual increase or growth by the addition of new layers or parts: The fund was increased by the accretion of new shareholders. The room hadn't been cleaned for years and showed several accretions of dirt and dust.Increasing and intensifying
(Definition of accretion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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