countdown

باللغة العربية: عَدّ تَنَازُلِيّ

1. A count backward in fixed units to the time of some event, especially the launch of a space vehicle.
2. The acts of preparation carried out during this period.
3. A radio or television program counting down the top songs of a given week, usually in reverse order and ending with the number one song.

الجمع countdowns