countdown

English Thesaurus

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

hypernym	:	count, counting, enumeration, numeration, reckoning, tally,
definition	:	the act of counting; reciting numbers in ascending order (noun.act)

derivation	:	count down,
definition	:	count backwards; before detonating a bomb, for example (verb.communication)

derivation	:	count down,
definition	:	count backwards; before detonating a bomb, for example (verb.communication)