accumulation

plural accumulations

1. countableuncountableThe act of amassing or gathering, as into a pile.
2. countableuncountableThe process of growing into a heap or a large amount.

   an accumulation of earth, of sand, of evils, of wealth, or of honors

   2 more examples

   At the lowest point, a short length of tunnel was driven alongside the up line, with a cross passage, to serve as a sump and pump house for dealing with any accumulation of water.

   1958 August 28, T. S. Lascelles, “Diamond Jubilee of the Waterloo & City Railway”, in Railway Magazine, page 520

   Accumulation of tiny, positional blunders adds up to a ruptured Kingside.

   1961 April, I. A. Horowitz, “Readers' Games”, in Chess Review

3. countableuncountableA mass of something piled up or collected.

   After such an accumulation of mistakes in the treatment of lexical items, it comes as no surprise that the section on word formation on p. 133 is equally poor.

   1989 January 28, Werner Winter, “On a new claim concerning substratum influence upon Tocharian”, in Central Asiatic Journal, volume 33, number 1/2, Harrassowitz Verlag, →ISSN, page 129

4. countableuncountablelawThe concurrence of several titles to the same proof.
5. countableuncountableaccountingThe continuous growth of capital by retention of interest or savings.
6. countableuncountablebusinessThe action of investors buying an asset from other investors when the price of the asset is low.
7. UKhistoricaluncountableeducationThe practice of taking two higher degrees simultaneously, to reduce the length of study.