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

Lower Manhattan’s long comeback recently reached a new milestone when jobs in the neighborhood exceeded the number in September 2001 for the first time since the terrorist attacks. Keiko Morris, WSJ, "Lower Manhattan Reaches Post-9/11 Employment Milestone," 9 May 2019 Leave it to Kylie to make sure that no birthday milestone passes without a lavish celebration! De Elizabeth, Teen Vogue, "Kylie Jenner Gave Travis Scott a Tattoo at His Birthday Party," 5 May 2019 Could this major red carpet milestone mean wedding bells are actually one step closer to a reality? Blair Donovan, Country Living, "Blake Shelton and Gwen Stefani Hit the Red Carpet With Her Sons for the First Time Ever," 29 Apr. 2019 Magnificent monitors Nvidia embracing FreeSync alone is a momentous shift and a major milestone for PC gamers. Brad Chacos, PCWorld, "6 important CES 2019 reveals and trends that PC enthusiasts need to know about," 11 Jan. 2019 Paramount Iconic '90s teen comedy Clueless is coming up on its 25 year anniversary this summer and, in honor of that milestone, several members of the original cast reunited in Chicago for a panel at the Chicago Comic & Entertainment Expo (C2E2). Kayleigh Roberts, Marie Claire, "'Clueless' Cast Reunites for the Movie's 25 Anniversary at Chicago Comic & Entertainment Expo," 24 Mar. 2019 In the time since that history-making milestone, much has changed for Ertz, both in soccer and in her personal life. Jenny Mccoy, SELF, "How Olympian and Pro Soccer Player Julie Ertz Is Training for the 2019 Women's World Cup," 23 Feb. 2019 With that milestone, the company is cleared to move ahead into assembly of the Dream Chaser vehicle that will deliver cargo to the station, SpaceNews reports. Eric Berger, Ars Technica, "Rocket Report: Rokot ending, more spaceports, back-to-back Falcon Heavies," 21 Dec. 2018 Within 200 days, players had spent a billion dollars on in-game upgrades—the shortest time to reach that milestone by a wide margin. Brian Barrett, WIRED, "The Quiet, Steady Dominance of Pokémon Go," 6 July 2018

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

Learn More about milestone

Statistics for milestone

Last Updated

16 May 2019

Look-up Popularity

Time Traveler for milestone

The first known use of milestone was in 1662

See more words from the same year

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

Comments on milestone

What made you want to look up milestone? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a strong desire or propensity

Get Word of the Day daily email!

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!