accumulation

noun | ac·cu·mu·la·tion
  1. : increase or growth by addition especially when continuous or repeated; specifically : an increase in the amount of a fund or property by the continuous addition to it of the income or interest it generates to treat a stock dividend as principal when local law classifies it as income may be deemed an accumulation —W. M. McGovern, Jr. et al. — see also accumulation trust at trust : an increase in the amount of a fund or property by the continuous addition to it of the income or interest it generates to treat a stock dividend as principal when local law classifies it as income may be deemed an accumulation —W. M. McGovern, Jr. et al. — see also accumulation trust at trust

    Note: Because they prevent the enjoyment and benefit of wealth, accumulations are deemed contrary to public policy. A provision in a will for an accumulation will be invalidated if found to be unreasonable by the court.