'Dialectology' definitions:

Definition of 'dialectology'

(from WordNet)
noun
The branch of philology that is devoted to the study of dialects

Definition of 'Dialectology'

From: GCIDE
  • Dialectology \Di`a*lec*tol"o*gy\, n. [Dialect + -logy.] That branch of philology which is devoted to the consideration of dialects. --Beck. [1913 Webster]