Dictionary.com
Thesaurus.com
Synonyms

liftoff

American  
[lift-awf, -of] / ˈlɪftˌɔf, -ˌɒf /
Or lift-off

noun

liftoffs plural
  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

  1. able to be shifted or removed by lifting off; capable of being lifted off.

    I organized the workshop with these liftoff adhesive labels for bins and shelves.

    We used magnetic liftoff nameplates on the lockers.

liftoff British  
/ ˈlɪftˌɒf /

noun

  1. the initial movement or ascent of a rocket from its launch pad

  2. the instant at which this occurs

"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

verb

  1. (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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of liftoff

First recorded in 1955–60; noun and adjective use of verb phrase lift off

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Wagner is confident that geothermal energy has now achieved liftoff, and will only get better and cheaper over time.

From BBC Jun. 25, 2026

Alexi has achieved cultural liftoff in a you-gotta-see-this way.

From The Wall Street Journal Jun. 23, 2026

He has edited his solos a little; they seem more concise, but they still achieve the same goal: liftoff.

From Salon May 28, 2026

The test mission is meant to last approximately 65 minutes after liftoff, as the upper stage cruises on a suborbital trajectory and eventually splashes down in the Indian Ocean, if all goes to plan.

From Barron's May 21, 2026

We were over Australia now, exactly one hour after liftoff, and all our machinery seemed to be working perfectly.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins

Security Council resolutions prohibit any satellite liftoffs by North Korea, viewing them as covers for testing its long-range missile technology.

From Washington Times Nov. 22, 2023

They also say if North Korea launches multiple missiles from different sites simultaneously, it would be more difficult for the allies to spot liftoffs in advance and shoot them down.

From Seattle Times Oct. 10, 2022

It was a thing of teeth-rattling liftoffs and bone-thumping landings and a dependence on fire—fire!, the fuel of the primitives—to get anywhere at all.

From Time Feb. 27, 2015

The engaging Gomez’s liftoffs occur courtesy of ZFX’s flying ­effects.

From Washington Post Dec. 9, 2014

Yet that audience dwindled quickly after the first flight in 1981 as the missions turned routine, or at least seemed that way to the television executives who decided to stop showing live liftoffs.

From New York Times Jul. 8, 2011

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training