Count down definitions

Countsdown

1) Prepares to launch
Found on https://www.crosswordclues.com/clue/countsdown

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count down

[v] - count backwards
Found on http://www.webdictionary.co.uk/definition.php?query=count%20down

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count down

verb count backwards; before detonating a bomb, for example
Found on https://www.encyclo.co.uk/local/20974

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