Pronunciation: (kount'doun"), [key]
1. the backward counting in fixed time units from the initiation of a project, as a rocket launching, with the moment of firing designated as zero.
2. the final preparations made during this period.
3. a period of increasing activity, tension, or anxiety, as before a deadline.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.