Going Backward in Numbers, 5, 4, 3, 2, 1

This page is the CodyCross answer for the clue below from Architectural Styles, Group 1163, Puzzle 5 (Flying Buttress).

Question is: Going Backward in Numbers, 5, 4, 3, 2, 1

and the answer is: COUNTDOWN

Word Meaning:

COUNTDOWN — (astronautics) A count backward in fixed units to the time of some event, especially the launch of a space vehicle.

Definitions from Wiktionary.

Going Backward In Numbers, 5, 4, 3, 2, 1 - Architectural Styles CodyCross Answers | CodyCross Solutions