D defs.my
Entry 1 sense Webster, 1913

Stratigraphy

· Stra·tig·ra·phy · IPA /stɹəˈtɪɡ.ɹəfi/
01 n. That branch of geology which treats of the arrangement and succession of strata.
  1. 1.
    That branch of geology which treats of the arrangement and succession of strata.