Martin Luther King Day

noun

Mar·​tin Lu·​ther King Day ˈmär-tᵊn-ˈlü-thər-ˈkiŋ- How to pronounce Martin Luther King Day (audio)
: the third Monday in January observed as a legal holiday in the U.S.

Note: The federal name for this holiday according to the United States Code is Birthday of Martin Luther King, Jr.

Examples of Martin Luther King Day in a Sentence

Recent Examples on the Web
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As Spraggins, a 20-year-old Inglewood native, prepares to start her own nonprofit later this year called Khali Cares, Dawn Hendricks-Milhouse, Spraggins’s aunt, brought her to volunteer Monday at the ninth annual Martin Luther King Day of Service at the Bridge Teen Center in Orland Park. Cam'ron Hardy, Chicago Tribune, 20 Jan. 2026 Good morning, and welcome to this Martin Luther King Day Monday. Leah Olajide, Freep.com, 19 Jan. 2026 Faith and business leaders, local government officials and community members gathered on Monday for a Martin Luther King Day event focused on education. Stephen Gruber-Miller, Des Moines Register, 19 Jan. 2026 For 40 years, Martin Luther King Day has been a federal holiday. Martha Teichner, CBS News, 18 Jan. 2026 See All Example Sentences for Martin Luther King Day

Word History

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of Martin Luther King Day was in 1968

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Cite this Entry

“Martin Luther King Day.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Martin%20Luther%20King%20Day. Accessed 27 Jan. 2026.

Last Updated: - Updated example sentences
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