millidegree

noun

mil·​li·​de·​gree ˌmi-lə-di-ˈgrē How to pronounce millidegree (audio)
: one thousandth of a degree

Word History

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of millidegree was in 1942

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Cite this Entry

“Millidegree.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/millidegree. Accessed 5 Jul. 2026.

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