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insularize

[in-suh-luh-rahyz, ins-yuh-]
verb (used with object), in·su·lar·ized, in·su·lar·iz·ing.
  1. to make into an island or represent as insular.
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Also especially British, in·su·lar·ise.

Origin of insularize

First recorded in 1890–95; insular + -ize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018