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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Starship’s heat shield will ultimately need to be durable enough to survive both types of reentry, potentially multiple times. Jackie Wattles, CNN Money, 19 June 2025 Releasing the trunk also exposes the spacecraft’s heat shield, which is critical to protecting the vehicle and the astronauts from the extreme heat of atmospheric re-entry. NBC News, 19 Mar. 2025 On this fifth test flight, SpaceX modified the ship's heat shield to better handle the hot temperatures of reentry, and the vehicle again made it to an on-target splashdown in the Indian Ocean. Ars Technica, 17 Jan. 2025 But Raptor 3 is designed to not require a heat shield around the thrust chamber and turbopump. ArsTechnica, 27 May 2025 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 16 Jul. 2025.

Kids Definition

heat shield

noun
: a barrier of insulation to protect a space capsule from heat on its return to earth
Last Updated: - Updated example sentences
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