milestone

noun

mile·​stone ˈmī(-ə)l-ˌstōn How to pronounce milestone (audio)
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The company entered a settlement agreement with Pivot Holding LLC, agreeing to pay $500,000 for milestone payments under a collaboration agreement. Quartz Bot, Quartz, 14 Nov. 2024 The addition of Discover marks a significant milestone in LabX’s mission to inspire, educate, and engage audiences in the dynamic world of science. Discover Staff, Discover Magazine, 8 Nov. 2024 Last week, Simpson shared another photo on a plane when announcing a major milestone. Erin Clements, People.com, 5 Nov. 2024 The new law marked a significant milestone in Tennessee whiskey history and allowed the team to launch the distillery. Joseph V Micallef, Forbes, 5 Nov. 2024 See all Example Sentences for milestone 

Word History

First Known Use

1662, in the meaning defined at sense 1

Time Traveler
The first known use of milestone was in 1662

Dictionary Entries Near milestone

Cite this Entry

“Milestone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milestone. Accessed 28 Nov. 2024.

Kids Definition

milestone

noun
mile·​stone ˈmī(ə)l-ˌstōn How to pronounce milestone (audio)
1
: a milepost made of stone
2
: an important point in progress or development

More from Merriam-Webster on milestone

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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