heat shield

noun

: a barrier of ablative material to protect a space capsule from heat on its entry into an atmosphere

Examples of heat shield in a Sentence

Recent Examples on the Web
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The pipe takes multiple bends before feeding into a handmade box muffler that doubles as a functional heat shield. New Atlas, 2 Sep. 2026 Confidence in future Artemis missions The success of the Artemis II heat shield, which now appears to have been confirmed by an extensive data review, will give NASA confidence in the performance of its deep-space vehicle for future lunar missions. Eric Berger, ArsTechnica, 1 Sep. 2026 Getting an up-close look at Ship, the company said, would shed light on how its heat shield held up during the flight — key information that could advance the development of Starship, which is designed to be fully and rapidly reusable. Mike Wall, Space.com, 27 Aug. 2026 Tracking Ship 40’s heat shield SpaceX has made a concerted effort to analyze Ship 40 through every phase of its journey. Jackie Wattles, CNN Money, 3 Aug. 2026 See All Example Sentences for heat shield

Word History

First Known Use

1962, in the meaning defined above

Time Traveler
The first known use of heat shield was in 1962

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Cite this Entry

“Heat shield.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20shield. Accessed 14 Sep. 2026.

Kids Definition

heat shield

noun
: a barrier of insulation to protect a space capsule from heat on its return to earth
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