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WordReference Random House Learner's Dictionary of American English © 2024lift•off or lift-off /ˈlɪftˌɔf, -ˌɑf/USA pronunciation n. [countable]- Aeronautics, Rocketry
- the action of an aircraft in rising into the air, or of a rocket in rising from its launching site under its own power.
- Aeronautics, Rocketrythe instant when such action occurs.
WordReference Random House Unabridged Dictionary of American English © 2024lift•off (lift′ôf′, -of′),USA pronunciation n. - 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 Termsthe launching or commencement of a project, plan, etc.:The liftoff of the sales campaign will be next month.
adj. - that removes by lifting off;
capable of being lifted off:a liftoff correction tape for typewriters; magnetized, liftoff nameplates.
Also, lift′-off′. - noun, nominal, adjective, adjectival use of verb, verbal phrase lift off 1955–60
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