mile·​stone | \ ˈmī(-ə)l-ˌstōn How to pronounce milestone (audio) \

Definition of milestone

1 : a stone serving as a milepost (see milepost sense 1)
2 : a significant point in development Graduating from college was an important milestone in her life.

Illustration of milestone

Illustration of milestone

milestone 1

Examples of milestone in a Sentence

the new drug was regarded as a milestone in the treatment of heart disease
Recent Examples on the Web This was a major milestone in the evolution of your LinkedIn profile from an e-resume and networking resource to a platform for showcasing your ideas and point of view. William Arruda, Forbes, 21 June 2022 The update marks a major milestone for the agency, which has been hampered by a massive backlog since the coronavirus pandemic began more than two years ago, leaving taxpayers waiting months to receive tax refunds from taxes filed last year. Sarah Ewall-wice, CBS News, 21 June 2022 Ropsten, the oldest Ethereum test network, transitioned to proof of stake on Wednesday in a milestone moment for the cryptocurrency space. Taylor Locke, Fortune, 8 June 2022 Rory Gates and his family are celebrating a milestone moment in his life. Maria Pasquini,, 7 June 2022 Earlier this morning, Kate and William shared a series of adorable photos on their social media accounts of her baking with the Cambridge children for their great-grandmother's milestone moment. Sophie Dweck, Town & Country, 5 June 2022 Gwyneth Paltrow and Chris Martin's 18-year-old daughter just achieved a major milestone. Chelsey Sanchez, Harper's BAZAAR, 3 June 2022 On Thursday, June 2, the Fabletics cofounder posted two images from the major milestone. Alexis Gaskin, Glamour, 3 June 2022 Forget breaking the sound barrier: Tom Cruise just flew past a major career milestone. Lindsey Bahr, Chicago Tribune, 29 May 2022 See More

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

First Known Use of milestone

1662, in the meaning defined at sense 1

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Time Traveler for milestone

Time Traveler

The first known use of milestone was in 1662

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Dictionary Entries Near milestone

Milesian tale



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Statistics for milestone

Last Updated

26 Jun 2022

Cite this Entry

“Milestone.” Dictionary, Merriam-Webster, Accessed 27 Jun. 2022.

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More Definitions for milestone


mile·​stone | \ ˈmīl-ˌstōn How to pronounce milestone (audio) \

Kids Definition of milestone

1 : a stone by the side of a road showing the distance in miles to a given place
2 : an important point in progress or development His discovery was a major milestone in scientific research.

More from Merriam-Webster on milestone

Nglish: Translation of milestone for Spanish Speakers

Britannica English: Translation of milestone for Arabic Speakers


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