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.
Enduring heat shield temperatures up to 3,500 degrees Fahrenheit, the spacecraft rapidly slowed down, deployed four big red-and-white parachutes and settled to an on-target 16-mph splashdown at 12:19 p.m. William Harwood, CBS News, 4 Apr. 2025 Flight 8 will likely attempt the same goals as Flight 7 would have achieved, such as testing Starship's payload deployment mechanism and gathering data on novel heat shield materials. Ars Technica, 21 Feb. 2025 However, delays in the development of the SLS and problems with the Orion crew capsule's heat shield have repeatedly pushed back timetables. Scott Neuman, NPR, 19 Feb. 2025 As expected, atmospheric friction warmed up its heat shield so much that molten debris flew off. Dhruv Khullar, The New Yorker, 10 Feb. 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

Browse Nearby Words

Cite this Entry

“Heat shield.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20shield. Accessed 15 Apr. 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
Love words? Need even more definitions?

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