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Definition of Countdown
1. Noun. Counting backward from an arbitrary number to indicate the time remaining before some event (such as launching a space vehicle).
Generic synonyms: Count, Counting, Enumeration, Numeration, Reckoning, Tally
Derivative terms: Count Down
Derivative terms: Count Down
Definition of Countdown
1. Noun. A count backward in fixed units to the time of some event, especially the launch of a space vehicle ¹
2. Noun. The acts of preparation carried out during this period ¹
3. Noun. (slang) A radio or television program counting down the top songs of a given week, usually in reverse order ending with the No. 1. ¹
4. Verb. (nonstandard) To count down ¹
¹ Source: wiktionary.com
Definition of Countdown
1. [n -S]