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.
They are made up of a top plate and a heat shield, which is jettisoned before splashdown. Chris Young, Interesting Engineering, 1 June 2026 The good news is that Starship’s heat shield appeared to function well during reentry, with fewer signs of damage or degradation as the vehicle splashed down northwest of Australia. Stephen Clark, ArsTechnica, 29 May 2026 For example, Ship successfully deployed 20 dummy Starlink internet satellites, as well as two actual Starlinks equipped with cameras to image the vehicle's heat shield in space. Mike Wall, Space.com, 27 May 2026 Once separated from its booster, the spacecraft deployed 20 dummy Starlink Internet satellites at an altitude of around 195 kilometers, as well as two operational satellites that are designed to scan Starship’s heat shield and beam images back to Earth for further analysis. Claire Cameron, Scientific American, 22 May 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

Browse Nearby Words

Cite this Entry

“Heat shield.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20shield. Accessed 5 Jun. 2026.

Kids Definition

heat shield

noun
: a barrier of insulation to protect a space capsule from heat on its return to earth
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster