- Aeronautics, Rocketry.
- the action of an aircraft in becoming airborne or of a rocket in rising from its launching site under its own power.
- the instant when such action occurs.
- Informal. the launching or commencement of a project, plan, etc.: The liftoff of the sales campaign will be next month.
- that removes by lifting off; capable of being lifted off: a liftoff correction tape for typewriters; magnetized, liftoff nameplates.
Origin of liftoff
First recorded in 1955–60; noun, adj. use of verb phrase lift off
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Words for lift offescalate, climb, soar, blow, depart, withdraw, go, disappear, fly, rise, sprout, mount, float, scale, arise, tower, ascend, bear, begone, decamp
- the initial movement or ascent of a rocket from its launch pad
- the instant at which this occurs
- (intr, 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
Online Etymology Dictionary, © 2010 Douglas Harper
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 Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.