The most common and most likely answer to this crossword clue is the 4 letter word MACH which also is the latest solution we found used in New York Times in 1988.
Sound-speed ratio number crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters |
|---|---|---|
| MACH | 100 % | 4 |
Words with a meaning similar to the clue: Sound-speed ratio number
These words may or may not be a possible solution to this crosswords clue.- mach
- mach number
- supersonic
- subsonic
- sonic
- hypersonic
- machmeter
- frequency
- turnover
- impedance
- slip
- average
Crossword Answer definitions
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution