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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

Last week Google set 2029 as a potential milestone for a future quantum computer that can break current encryption for crypto.

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

The end of the Universal Credit rollout marks an important milestone in the revolution that was seeded in the east end of Glasgow.

From BBC • Mar. 30, 2026

The capacity to deal effectively with syphilis and tuberculosis represents a milestone in human endeavor, even though full use of this potential has not yet been made.

From "The Lives of a Cell" by Lewis Thomas