S: (n) accretion (something contributing to growth or increase) "he scraped away the accretions of paint"; "the central city surrounded by recent accretions"
S: (n) addition, increase, gain (a quantity that is added) "there was an addition to property taxes this year"; "they recorded the cattle's gain in weight over a period of weeks"
S: (n) accretion ((geology) an increase in land resulting from alluvial deposits or waterborne sediment)
S: (n) accretion ((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))