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Definition of Countdown in English :

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Countdown meaning in English

Meaning of Countdown in English

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Countdown

see synonyms of countdown

Noun

1. countdown

counting backward from an arbitrary number to indicate the time remaining before some event (such as launching a space vehicle)

WordNet Lexical Database for English. Princeton University. 2010.

Countdown

see synonyms of countdown
noun
1. 
the act of counting backwards to time a critical operation exactly, such as the launching of a rocket or the detonation of explosives
verb count down (intr, adverb)
2. 
to count numbers backwards towards zero, esp in timing such a critical operation

Collins English Dictionary. Copyright © HarperCollins Publishers

Countdown

see synonyms of countdown
noun
the schedule of operations just before the firing of a rocket, the detonation of an explosive device, etc.; also, the counting off, in reverse order, of units of time in such a schedule

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Countdown

see synonyms of countdown
n.
1. The counting backward aloud from an arbitrary starting number to indicate the time remaining before an event or operation, such as the launching of a missile or space vehicle.
2. The checks and preparations carried out during this activity.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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