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    lift off
  2. LIFT-OFF definition: 1. the action of a spacecraft or rocket leaving the ground: 2. the action of a spacecraft or…. Learn more.

  3. : a vertical takeoff by an aircraft or a rocket vehicle or missile. Synonyms. blastoff. launch. takeoff. See all Synonyms & Antonyms in Thesaurus. Examples of liftoff in a Sentence. a series of successful liftoffs Thousand of spectators gathered to watch the liftoff of the space shuttle.

  4. Lift-off is the beginning of a rocket's flight into space, when it leaves the ground. The lift-off was delayed about seven minutes. The rocket tumbled out of control shortly after lift-off.

  5. noun [ C ] (also lift-off) us / ˈlɪftˌɔf / Add to word list. the moment when a space vehicle leaves the ground. (Definition of liftoff from the Cambridge Academic Content Dictionary © Cambridge University Press) Examples of liftoff. liftoff.

  6. 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.

  7. a. To revoke by taking back; rescind: lifted the embargo. b. To bring an end to (a blockade or siege) by removing forces. 3. To cease (artillery fire) in an area. 4. a. To raise in condition, rank, or esteem: work that lifted her in the eyes of her colleagues. b. To uplift; elate: Your telephone call really lifted my spirits. 5.

  8. 1. Aeronautics. a. the action of an aircraft in becoming airborne or of a rocket in rising from its launching site under its own power. b. 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.