An increase by natural growth or addition.

synonym: accumulation.

Roget 194: expansion; increase of size etc. 35; enlargement, extension, augmentation; amplification, ampliation^†; aggrandizement, spread, increment, growth, development, pullulation, swell, dilation, rarefaction; turgescence^†, turgidness, turgidity; dispansion^†; obesity etc. (size) 192; hydrocephalus, hydrophthalmus [Med.]; dropsy, tumefaction, intumescence, swelling, tumor, diastole, distension; puffing, puffiness; inflation; pandiculation^†.    dilatability, expansibility.    germination, growth, upgrowth^†; accretion etc. 35; budding, gemmation^†.    overgrowth, overdistension^†; hypertrophy, tympany^†.    bulb etc. (convexity) 250; plumper; superiority of size.    [expansion of the universe] big bang; Hubble constant.    ... show more

Roget 35: increase, augmentation, enlargement, extension; dilatation etc. (expansion) 194; increment, accretion; accession etc. 37; development, growth; aggrandizement, aggravation; rise; ascent etc. 305; exaggeration exacerbation; spread etc. (dispersion) 73; flood tide; gain, produce, product, profit.    ... show more

Something contributing to growth or increase.

astronomy The formation of a celestial object by the effect of gravity pulling together surrounding objects and gases.

Polish: akrecja

biology Growth by addition as by the adhesion of parts or particles.

Polish: akrecja

geology An increase in land resulting from alluvial deposits or waterborne sediment.

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).