the GNU version of the Collaborative International Dictionary of English
n. That branch of philology which is devoted to the consideration of dialects.
The Century Dictionary and Cyclopedia
n. That branch of philology which examines the nature and relations of dialects.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the branch of philology that is devoted to the study of dialects
Word Usage
"Two of his students have had bibliographies written for his class published; one, Michael Fody, had his paper appear in the outstanding journal of the world in the field of dialectology, Orbis (Belgium)"