isograph

[ ahy-suh-graf, -grahf ]
/ ˈaɪ səˌgræf, -ˌgrɑf /

noun

(in the study of the geographical distribution of a dialect) a line drawn on a map to indicate areas having common linguistic characteristics.

Origin of isograph

First recorded in 1935–40; iso- + -graph

OTHER WORDS FROM isograph

i·so·graph·ic [ahy-suh-graf-ik] /ˌaɪ səˈgræf ɪk/, i·so·graph·i·cal, adjective i·so·graph·i·cal·ly, adverb

Words nearby isograph

isogonic line, isograd, isogradient, isograft, isogram, isograph, isogriv, isohaline, isohel, isohemagglutination, isohemagglutinin