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liftoff

[lift-awf, -of] /ˈlɪftˌɔf, -ˌɒf/
noun
1.
Aeronautics, Rocketry.
  1. the action of an aircraft in becoming airborne or of a rocket in rising from its launching site under its own power.
  2. the instant when such action occurs.
2.
Informal. the launching or commencement of a project, plan, etc.:
The liftoff of the sales campaign will be next month.
adjective
3.
that removes by lifting off; capable of being lifted off:
a liftoff correction tape for typewriters; magnetized, liftoff nameplates.
Also, lift-off.
Origin
1955-1960
1955-60; noun, adj. use of verb phrase lift off
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for lift off

liftoff

/ˈlɪftˌɒf/
noun
1.
the initial movement or ascent of a rocket from its launch pad
2.
the instant at which this occurs
verb
3.
(intransitive, adverb) (of a rocket) to leave its launch pad
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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Word Origin and History for lift off

liftoff

n.

also lift-off, "vertical take-off of a rocket, etc.," 1956, American English, from lift (v.) + off.

Online Etymology Dictionary, © 2010 Douglas Harper
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Idioms and Phrases with lift off

lift off

Begin flight, as in The spacecraft was due to lift off at ten o'clock. The off in this idiom means “off the ground.” [ Late 1800s ]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Difficulty index for liftoff

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Word Value for lift

7
8
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