Teflon

[ tef-lon ]
/ ˈtɛf lɒn /

Trademark.

a fluorocarbon polymer with slippery, nonsticking properties; polytetrafluoroethylene.

adjective

characterized by imperviousness to blame or criticism: a Teflon politician.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for teflon

Teflon

/ (ˈtɛflɒn) /

noun

trademark polytetrafluoroethylene, when used in nonstick cooking vessels

adjective

facetious denoting the ability to evade blamethe Teflon president
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012