Accretion - Definition

n 1: an increase by natural growth or addition [syn:
accretion, accumulation]
2: something contributing to growth or increase; "he scraped
away the accretions of paint"; "the central city surrounded
by recent accretions"
3: (astronomy) the formation of a celestial object by the effect
of gravity pulling together surrounding objects and gases
4: (biology) growth by addition as by the adhesion of parts or
particles
5: (geology) an increase in land resulting from alluvial
deposits or waterborne sediment
6: (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)