"acretion" is probably misspelled. Trying accretion instead Definition of accretion
accretion has definitions from the field of law
1
[ noun ] an increase by natural growth or addition

Synonyms

accumulation

2
[ noun ] (biology) growth by addition as by the adhesion of parts or particles
3
[ noun ] (geology) an increase in land resulting from alluvial deposits or water-borne sediment
4
[ noun ] (astronomy) the formation of a celestial object by the effect of gravity pulling together surrounding objects and gases
5
[ noun ] something contributing to growth or increase

Examples

"he scraped away the accretions of paint" "the central city surrounded by recent accretions"

6
[ noun ] (law) an increase in a beneficiary's share in an estate (as when a co-beneficiary dies or fails to meet some condition or rejects the inheritance)
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