insulant

insulant

[in-suh-luhnt, ins-yuh-]
noun
an insulating material, as used in building trades.

Origin:
1930–35; insul(ate) + -ant

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
insulant

noun
a material that reduces or prevents the transmission of heat or sound or electricity [syn: insulating material
WordNet® 3.0, © 2006 by Princeton University.
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