countdown
1. [ noun ] counting backward from an arbitrary number to indicate the time remaining before some event (such as launching a space vehicle)
Related terms: count count_down
Similar spelling:   count_down
  comedown
  Condon
  come_down
  count_noun
  condemn
  condone
  condense
  counting
  conodont
  count_on
  Conodonta
  condenser
  condensed
  condemned
  condom
  condensing
  condensate
  condemning
  condiment
  condemnable
  countenance
  condonation