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[blast-awf, -of, blahst-] /ˈblæstˌɔf, -ˌɒf, ˈblɑst-/
noun, Aerospace.
the launching of a rocket, guided missile, or spacecraft.
Origin of blastoff
First recorded in 1950-55; noun use of verb phrase blast off Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for blastoff
Historical Examples
  • He saw the girl again next day, when they checked in for blastoff.

    The Colors of Space Marion Zimmer Bradley
  • For one thing, he treated the crew like dirt and had treated them that way since blastoff from Earth almost five months before.

    A World Called Crimson Darius John Granger
  • A little more than two hours before the G-boat's blastoff time, and it couldn't wait for them.

    Wind Charles Louis Fontenay
  • They went inside swiftly and in a very few minutes prepared the thousand-tonner for blastoff.

    Equation of Doom Gerald Vance
  • "blastoff time is 2100 tonight," he said, ending the interview.

    Atom Drive Charles Louis Fontenay
  • Ramsey was saying softly: “Fifty-three, fifty-four, fifty-five, fifty-six … blastoff!”

    Equation of Doom Gerald Vance
  • He tensed now, not daring to relax for fear that the blastoff accelleration would slam him when he was unprepared.

    Gold in the Sky Alan Edward Nourse
  • She had been busy since blastoff, testing the computers, checking and rechecking them, being overly efficient.

    The Judas Valley Gerald Vance
  • The padded passenger compartments were above the blastoff drum freight sections.

    The Planet Strappers Raymond Zinke Gallun
  • Dehydrated food, flasks of oxygen and water, and blastoff drums to contain our gear, are all relatively simple.

    The Planet Strappers Raymond Zinke Gallun
British Dictionary definitions for blastoff


the launching of a rocket under its own power
the time at which this occurs
(adverb; when transitive, usually passive) (of a rocket, spacemen, etc) to be launched
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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