I1S1O1G2L1O1S1S1A1L1
11 points
ISOGLOSSAL is validvalid
relating to an isogloss, a line connecting points of similar regional dialect, also ISOGLOSSIC, ISOGLOTTAL, ISOGLOTTIC
relating to an isogloss, a line connecting points of similar regional dialect, also ISOGLOSSIC, ISOGLOTTAL, ISOGLOTTIC