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liftoff

1 ENTRIES FOUND:
liftoff /ˈlɪftˌɑːf/ noun
plural liftoffs
liftoff
/ˈlɪftˌɑːf/
noun
plural liftoffs
Learner's definition of LIFTOFF
: the upward movement from the ground by a rocket, helicopter, or space vehicle as it begins flight(火箭、直升机、航天器的)发射,起飞,升空
[noncount]
[count]
see also lift off at 1lift
BNC: 0 COCA: 23345

liftoff

noun

lift·​off ˈlift-ˌȯf How to pronounce liftoff (audio)
: a vertical takeoff by an aircraft or a rocket vehicle or missile

Example Sentences

a series of successful liftoffs Thousand of spectators gathered to watch the liftoff of the space shuttle.
Recent Examples on the Web Agency officials confirmed Monday that repairs are still underway to address hydrogen fuel leaks in the uncrewed Space Launch System rocket that thwarted two previous liftoff attempts. Denise Chow, NBC News, 13 Sep. 2022 Whatever the rationale, a triumphant return to the moon can only begin in one place: on the launchpad, with a successful liftoff of a rocket. Marina Koren, The Atlantic, 6 Sep. 2022 In the last few seconds, hydrogen will burn off, the four RS-25 engines will start, resulting in booster ignition and liftoff at T minus zero. Ashley Strickland, CNN, 2 Sep. 2022 Officials Tuesday evening said teams are prepping for a 2:17 p.m. EDT Saturday, Sept. 3, liftoff of the Space Launch System rocket and Orion capsule. Emre Kelly, USA TODAY, 30 Aug. 2022 Regardless of all the technical snags, thunderstorms ultimately would have prevented a liftoff. Marcia Dunn, The Christian Science Monitor, 29 Aug. 2022 If viewers awake to find fueling began as planned earlier Monday morning, there’s a shot at on-time liftoff. Lee Roop | Lroop@al.com, al, 29 Aug. 2022 Regardless of all the technical snags, thunderstorms ultimately would have prevented a liftoff. Marcia Dunn, Anchorage Daily News, 29 Aug. 2022 Even if liftoff and landing usually take only about 65 seconds, a margin of error is needed in case of emergencies. Jon Sindreu, WSJ, 25 Aug. 2022 See More

Word History

First Known Use

circa 1956, in the meaning defined above

Time Traveler
The first known use of liftoff was circa 1956
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