The Open Dictionary

accumulation

noun

UK/əˌkjuː.mjəˈleɪ.ʃᵊn/
US/əˌkjuː.mjəˈleɪ.ʃᵊn/

Definitions of accumulation noun

  1. C2CountableUncountable

    a quantity of something that has been gathered or acquired over time

    • Through the accumulation of research data over the years, scientists have gained a deeper understanding of this phenomenon.

    • A long-term lack of exercise can lead to the accumulation of fat in the body.

    • Air pollution in urban areas is a result of the long-term accumulation of several factors.