'Stratigraphy' definitions:
Definition of 'stratigraphy'
From: WordNet
noun
The branch of geology that studies the arrangement and succession of strata
Definition of 'Stratigraphy'
From: GCIDE
- Stratigraphy \Stra*tig"ra*phy\, n. [Stratum + -graphy.] That branch of geology which treats of the arrangement and succession of strata. [1913 Webster]