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milestone
noun
mile·stone
ˈmī(-ə)l-ˌstōn 
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.
Synonyms
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
Two major life milestones taking place within that timeline is a shocking reminder of just how long Swift has been on tour.
—
Skyler Caruso, People.com, 26 Oct. 2024
Amtrak's new, five-month-old Borealis line connecting Milwaukee to the Twin Cities and Chicago hit a major milestone this week.
—Claire Reid, Journal Sentinel, 25 Oct. 2024
Within a year of dating, 31-year-old Siara Rouzer crossed a major relationship milestone.
—Jocelyn Solis-Moreira, CNN, 24 Oct. 2024
Presidential advocacy has helped the U.S. land astronauts on the surface of the Moon, establish lasting international partnerships with civil space agencies abroad and led to many other important space milestones.
—Thomas G. Roberts, The Conversation, 23 Oct. 2024
See all Example Sentences for milestone 
Skyler Caruso, People.com, 26 Oct. 2024
Amtrak's new, five-month-old Borealis line connecting Milwaukee to the Twin Cities and Chicago hit a major milestone this week.
—Claire Reid, Journal Sentinel, 25 Oct. 2024
Within a year of dating, 31-year-old Siara Rouzer crossed a major relationship milestone.
—Jocelyn Solis-Moreira, CNN, 24 Oct. 2024
Presidential advocacy has helped the U.S. land astronauts on the surface of the Moon, establish lasting international partnerships with civil space agencies abroad and led to many other important space milestones.
—Thomas G. Roberts, The Conversation, 23 Oct. 2024
See all Example Sentences for milestone
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'milestone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Milestone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milestone. Accessed 5 Nov. 2024.
Copy CitationKids Definition
milestone
noun
mile·stone
ˈmī(ə)l-ˌstōn
1
: a milepost made of stone
2
: an important point in progress or development
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