Dictionary![]() ![]() in•su•la•tionPronunciation: (in"su-lā'shun, ins"yu-), [key] —n. 1. material used for insulating. 2. the act of insulating. 3. the state of being insulated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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