austenite

noun

aus·​ten·​ite ˈȯ-stə-ˌnīt How to pronounce austenite (audio)
ˈä-
: a solid solution in iron of carbon and sometimes other solutes that occurs as a constituent of steel under certain conditions
austenitic adjective

Examples of austenite 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.
Nitrogen and nickel together hold the metal in the tough, ductile austenite phase even when the temperature plunges to –269 °C. Kaif Shaikh, Interesting Engineering, 6 Aug. 2025 At the atomic level, there are principally four phases of auto steel, including the hardest yet most brittle, called martensite, and the more ductile austenite. John Johnson Jr., Smithsonian Magazine, 7 Aug. 2024

Word History

Etymology

French, from Sir W. C. Roberts-Austen †1902 English metallurgist

First Known Use

1896, in the meaning defined above

Time Traveler
The first known use of austenite was in 1896

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Cite this Entry

“Austenite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/austenite. Accessed 10 Sep. 2025.

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