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thermal barrier

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noun Aeronautics, Rocketry.
the high temperatures produced by the friction between a supersonic object and the earth's atmosphere that limit the speed of an airplane or rocket.
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Also called heat barrier.

Origin of thermal barrier

First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use thermal barrier in a sentence

British Dictionary definitions for thermal barrier

thermal barrier

noun
an obstacle to flight at very high speeds as a result of the heating effect of air frictionAlso called: heat barrier
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
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