accretion
noun/əˈkriːʃn/
/əˈkriːʃn/
(specialist or formal)- [countable] a layer of a substance or a piece of matter that is slowly added to something
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- [uncountable] the process of new layers or matter being slowly added to something
- the accretion of sand by wind action
Word Originearly 17th cent.: from Latin accretio(n-), from accrescere ‘become larger’, from ad- ‘to’ + crescere ‘grow’.
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accretion