/ Dictionary / Index I insular: Meaning and Definition of Find definitions for: in•su•lar Pronunciation: (in'su-lur, ins'yu-), [key] — adj. of or pertaining to an island or islands: insular possessions. dwelling or situated on an island. forming an island: insular rocks. detached; standing alone; isolated. of, pertaining to, or characteristic of islanders. narrow-minded or illiberal; provincial: insular attitudes toward foreigners. occurring in or characterized by one or more isolated spots, patches, or the like. pertaining to an island of cells or tissue, as the islets of Langerhans. —n. an inhabitant of an island; islander. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: insular (Thesaurus) insulant Insular Celtic Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language