積澱

积淀
jīdiàn
  1. deposits accumulated over long periods
  2. fig. valuable experience, accumulated wisdom

CEDICT

Entry Composition

1 積 jī
  1. to amass; to accumulate; to store up
  2. (math.) product (the result of multiplication)
  3. (TCM) constipation; indigestion
2 澱 diàn to form sediment; to precipitate