heat shield

noun

Definition of heat shield

: 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 The primary goal is to sign off on Orion’s ability to support crew for future missions, including testing a heat shield that can endure the stresses of an intense re-entry. Richard Tribou, Orlando Sentinel, 3 Aug. 2022 One of the main objectives of the flight is to test Orion’s heat shield, said Mike Sarafin, NASA’s Artemis mission manager. Christian Davenport, Washington Post, 20 July 2022 Solar Orbiter's heat shield reached about 932 degrees Fahrenheit (500 degrees Celsius), but functioned as expected and protected the spacecraft during its historic first flyby. Ashley Strickland, CNN, 18 May 2022 Some think Pushaw’s aggressive persona is strategic, acting as a kind of heat shield for DeSantis. Paul Farhi, Washington Post, 27 July 2022 This cleanser provides both thickness and volume, as well as a UV/heat shield to protect strands from the frizzing and frying effects of blow-drying, humidity and sun exposure. Justin Fenner, Robb Report, 26 June 2022 Another error that could have damaged the heat shield that protects the capsule was fixed during the mission. Micah Maidenberg, WSJ, 19 May 2022 Altogether, Seedhouse estimates a suit replete with a propulsion system, a fully redundant life-support system, and heat shield could weigh as much as 500 pounds. Jennifer Leman, Popular Mechanics, 2 May 2022 Using a heat shield and the Earth's atmosphere to slow down is free—and no one wants to turn down free. Rhett Allain, Wired, 25 Feb. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heat shield.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of heat shield

1962, in the meaning defined above

Learn More About heat shield

Time Traveler for heat shield

Time Traveler

The first known use of heat shield was in 1962

See more words from the same year

Dictionary Entries Near heat shield

heat-set

heat shield

heat-shock protein

See More Nearby Entries 

Statistics for heat shield

Last Updated

16 Aug 2022

Cite this Entry

“Heat shield.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20shield. Accessed 16 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

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