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Definitions

milestone

[mahyl-stohn] / ˈmaɪlˌstoʊn /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Orion's next milestone, set to take place on day five of the 10-day mission, is to enter the lunar sphere of influence, where the Moon's gravitational pull exceeds that of the Earth, according to NASA.

From Barron's • Apr. 4, 2026

OpenAI claims that it will “soon” be the fastest technology platform to reach 1 billion weekly active users, adding that it was already the fastest to reach the 100 million milestone.

From MarketWatch • Mar. 31, 2026

The results represent a key milestone for Astratus Limited, the University of Reading spin-out company established in November 2024 to bring the test to market.

From Science Daily • Mar. 31, 2026

InSilico will receive an upfront payment of $115 million, and is eligible for additional milestone payments that could put the total deal value at about $2.75 billion, it said in a filing.

From The Wall Street Journal • Mar. 30, 2026

One woman’s actions on a single bus eventually led to the Montgomery, Alabama, bus boycott, a milestone in the Civil Rights Movement.

From "March Forward, Girl" by Melba Pattillo Beals