UnscrambleTheWord.cocountdown
Is it a Scrabble word? See definition, points, and words you can make.
Is countdown a Scrabble word?
Word Games
- Scrabble US/Canada (OTCWL) Yes
- Scrabble UK (SOWPODS) Yes
- Wordle No
- Words With Friends Yes
Scrabble US/Canada (OTCWL) 
Wordle 
Words With Friends What is the meaning of countdown?
Definition
noun (English)
1. (astronautics) A count backward in fixed units to the time of some event, especially the launch of a space vehicle.
2. (astronautics) The acts of preparation carried out during this period.
3. (radio, television) 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.
verb (English)
1. (nonstandard) To count down.Examples: "This was accomplished in the old system by polling a software variable representing the number of prebleach bin and issuing a software command to trigger the AOM once the variable has countdowned to zero."; "Time measures itself out in a series of diminishing peristaltic ticks, countdowning slowly towards the miracle of Ignition."; "Whole families stood gawking at the massive statue, countdowning the five remaining minutes to the big one."nonstandard
Definition source: Wiktionary