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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.
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
NewsNation reached a major milestone on Sunday, outperforming CNN and MSNBC in total viewers and the key advertising demographic of adults aged 25-54 for six consecutive hours, the first time the network has achieved that feat, according to Nielsen data.
—
Heather Hunter, The Washington Examiner, 24 Sep. 2025
Redondo’s career milestones include headlining the first all-Spanish show at the Miami Improv in 2019 and performing at the Netflix Is a Joke festival in 2024.
—Ethan Shanfeld, Variety, 23 Sep. 2025
The milestone took place at the Kennedy Space Center in Florida and marks an important step in advancing solid fuel ramjet (SFRJ) propulsion technology.
—Sujita Sinha, Interesting Engineering, 23 Sep. 2025
The array of choices blends pop-culture favorites with commemorations of major American milestones.
—Aliss Higham, MSNBC Newsweek, 23 Sep. 2025
See All Example Sentences for milestone
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Heather Hunter, The Washington Examiner, 24 Sep. 2025
Redondo’s career milestones include headlining the first all-Spanish show at the Miami Improv in 2019 and performing at the Netflix Is a Joke festival in 2024.
—Ethan Shanfeld, Variety, 23 Sep. 2025
The milestone took place at the Kennedy Space Center in Florida and marks an important step in advancing solid fuel ramjet (SFRJ) propulsion technology.
—Sujita Sinha, Interesting Engineering, 23 Sep. 2025
The array of choices blends pop-culture favorites with commemorations of major American milestones.
—Aliss Higham, MSNBC Newsweek, 23 Sep. 2025
See All Example Sentences for milestone
Cite this Entry
“Milestone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/milestone. Accessed 26 Sep. 2025.
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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