blast·​off | \ ˈblast-ˌȯf How to pronounce blastoff (audio) \

Definition of blastoff

 (Entry 1 of 2)

: a blasting off (as of a rocket)

blast off

blasted off; blasting off; blasts off

Definition of blast off (Entry 2 of 2)

intransitive verb

: take off sense 1b used especially of rocket-propelled missiles and vehicles

Synonyms & Antonyms for blastoff

Synonyms: Noun

Antonyms: Noun

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Examples of blastoff in a Sentence

Noun the mission was scrubbed just minutes before blastoff
Recent Examples on the Web: Noun What if the rocket could be tossed several meters above the surface, allowing more clearance for blastoff? Jonathan O'callaghan, Scientific American, 4 Mar. 2022 Walter Cronkite helms the program, and news clips depict excited crowds, waving astronauts and a blastoff countdown. Jane Recker, Smithsonian Magazine, 23 Feb. 2022 Billions over budget and years behind schedule, the James Webb Space Telescope is targeted for blastoff from the European Space Agency's Kourou, French Guiana, launch site at 7:20 a.m. EST Saturday atop an Ariane 5 rocket, weather permitting. William Harwood, CBS News, 24 Dec. 2021 The communications problem, which technicians were still troubleshooting as of this morning, has pushed Webb’s blastoff back a couple of days, to December 24. Marina Koren, The Atlantic, 15 Dec. 2021 Live footage showed the 154-foot rocket soaring into the air with bright yellow flames shooting out of its engines after blastoff at Naro Space Center, the country's lone spaceport, on a small island off its southern coast. Arkansas Online, 22 Oct. 2021 His image caught the fiery blastoff, with spectators silhouetted in the glow of creation., 19 Aug. 2021 Shatner will join Chris Boshuizen, founder of Earth-observation company Planet Labs; microbiologist Glen de Vries; and Blue Origin's Audrey Powers for blastoff on a 10-minute up-and-down flight out of the discernible atmosphere to the edge of space. William Harwood, CBS News, 11 Oct. 2021 His image caught the fiery blastoff, with spectators silhouetted in the glow of creation., 19 Aug. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blastoff.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of blastoff


1934, in the meaning defined above


1934, in the meaning defined above

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Time Traveler for blastoff

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The first known use of blastoff was in 1934

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Cite this Entry

“Blastoff.” Dictionary, Merriam-Webster, Accessed 30 Jun. 2022.

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More Definitions for blastoff


blast·​off | \ ˈblast-ˌȯf \

Kids Definition of blastoff

: an instance of taking off (as of a rocket)


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