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 heat shield was dumped at a lower altitude, and the parachute and the top piece were discarded. Chris Smith, BGR, 15 May 2021 Protected by a high-tech heat shield, the Crew Dragon slammed into the discernible atmosphere around 2:45 a.m., rapidly decelerating in a blaze of atmospheric friction. William Harwood, CBS News, 3 May 2021 The spacecraft's abort system was upgraded, enabling on-pad emergency escape in higher winds, new parachutes were installed and a new heat shield was attached. William Harwood, CBS News, 23 Apr. 2021 Since President Reagan, every new administration has lost at least one confirmation fight, and whether by design or happenstance, Tanden’s nomination has served as something of a heat shield for other Biden choices. Los Angeles Times, 5 Mar. 2021 The back shell and parachute separate after the heat shield is discarded -- that will happen when the spacecraft is 1.3 miles above the Martian surface. Ashley Strickland, CNN, 18 Feb. 2021 All that resistance, however, acted as a powerful brake, and three minutes after peak heating, the speed of the ship was reduced to 1,609 kph, slow enough for the heat shield to be jettisoned and a parachute to deploy. Jeffrey Kluger, Time, 18 Feb. 2021 The turbocharger heat shield may fail and detach from the vehicle. Detroit Free Press, 6 Mar. 2021 The wind will pick up as Perseverance sheds its protective heat shield and soars through the Martian atmosphere. Jennifer Leman, Popular Mechanics, 18 Feb. 2021

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.

See More

First Known Use of heat shield

1962, in the meaning defined above

Keep scrolling for more

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

Statistics for heat shield

Last Updated

24 May 2021

Cite this Entry

“Heat shield.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20shield. Accessed 14 Jun. 2021.

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

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Dog Breeds

True or False

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

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

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!