I1S1O1G2L1O1S1S1I1C3
13 points
ISOGLOSSIC is validvalid
relating to an isogloss, a line connecting points of similar regional dialect, also ISOGLOSSAL, ISOGLOTTAL, ISOGLOTTIC
relating to an isogloss, a line connecting points of similar regional dialect, also ISOGLOSSAL, ISOGLOTTAL, ISOGLOTTIC