1 milestone | Definition of milestone

milestone

noun
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

Keep scrolling for more

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

Aurora is in Head Start and has reached her developmental milestones for her age. Boys & Girls Aid, oregonlive, "Arturo, 5, and Aurora, 4, are hoping to find a calm, consistent family: A Home of Their Own," 31 Aug. 2019 While the Citizens cruised to victory, a milestone was made on the south coast as David Silva played his 400th match for the club in what has been a magnificent nine-year spell in sky blue. SI.com, "Bournemouth 1-3 Man City: Pep Guardiola on David Silva, VAR & Areas to Improve," 25 Aug. 2019 Congratulations on your big milestone, and good luck with the angry mob. Carolyn Hax, The Mercury News, "Carolyn Hax: I want to rescind their wedding invitation because they’re sulking," 21 Aug. 2019 Jamie and Nikki gained viral fame sharing their biggest couple milestones, like their engagement and pregnancy journeys, with their followers. Jasmine Grant, Essence, "Say It Ain't So! YouTube Couple Jamie and Nikki Perkins Have Separated," 20 Aug. 2019 Her milestone comes 24 years after the Marine Corps got its first female aviator, then-2nd Lt. Elizabeth Chuck, NBC News, "Woman becomes first female Marine to pilot F-35B fighter jet," 16 Aug. 2019 There’s plenty of reassessment being directed at the late '60s this summer, as Woodstock, the Manson murders and the first lunar landing all hit their five-decade milestones. Justin Lowe, The Hollywood Reporter, "'Creating Woodstock': Film Review," 14 Aug. 2019 Sampaio posted a video of herself to Instagram as well, seeming to reference her milestone in the caption — and the Pink campaign again in the hashtags. Krystin Arneson, Allure, "Valentina Sampaio Is Reportedly Victoria's Secret's First Openly Transgender Model," 4 Aug. 2019 Signore celebrated her milestone with a birthday party at the Bartow Community Center in Coop City, according to WCBS. Michelle Lou, CNN, "Woman turns 107 and shares her secret to longevity: 'I never got married'," 31 July 2019

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.

See More

First Known Use of milestone

1662, in the meaning defined at sense 1

Keep scrolling for more

Keep scrolling for more

More Definitions for milestone

milestone

noun

English Language Learners Definition of milestone

: a stone by the side of a road that shows the distance in miles to a specified place
: an important point in the progress or development of something : a very important event or advance

milestone

noun
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.

Keep scrolling for more