liftoff

noun

lift·​off ˈlift-ˌȯf How to pronounce liftoff (audio)
: a vertical takeoff by an aircraft or a rocket vehicle or missile

Examples of liftoff in a Sentence

a series of successful liftoffs Thousand of spectators gathered to watch the liftoff of the space shuttle.
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 rocket's Centaur upper stage released the satellites at an altitude of 280 miles (450 kilometers) less than an hour after liftoff. Stephen Clark, ArsTechnica, 3 May 2025 Related: Europe's Vega-C rocket launches Earth-observation satellite on 1st liftoff since 2022 failure (video) If all goes according to plan on Tuesday, the Vega-C will deploy Biomass into a sun-synchronous orbit 414 miles (666 kilometers) above Earth about 57 minutes after liftoff. Mike Wall, Space.com, 29 Apr. 2025 The May 6 attempt was scrubbed two hours before liftoff because of valve on ULA’s upper Centaur stage that teams continue to investigate. Richard Tribou, The Orlando Sentinel, 25 Apr. 2025 Watch live above as the crew heads off to the final frontier, and read on to learn more about their historic liftoff. Emlyn Travis, EW.com, 14 Apr. 2025 See All Example Sentences for liftoff

Word History

First Known Use

circa 1956, in the meaning defined above

Time Traveler
The first known use of liftoff was circa 1956

Browse Nearby Words

Cite this Entry

“Liftoff.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/liftoff. Accessed 7 May. 2025.

Kids Definition

liftoff

noun
lift·​off ˈlif-ˌtȯf How to pronounce liftoff (audio)
: a vertical takeoff (as by a rocket)

More from Merriam-Webster on liftoff

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!