Noun

1. The act of accumulating, the state of being accumulated, or that which is accumulated; as, an accumulation of earth, of sand, of evils, of wealth, of honors.
2. The concurrence of several titles to the same proof.
3. The continuous growth of capital by retention of interest or savings.
4. (investment) The action of experienced investors buying an asset from inexperienced investors when the price of the asset is low.