| Answer | Crossword Clue |
|---|---|
| MACH | Speed-of-sound number |
| MACH | Speed of sound number |
| MACH | Number used in measuring the speed of sound |
| mach | a number relating the speed of a body to the speed of sound |
| machs | MACH, a number relating the speed of a body to the speed of sound |
| mach | number indicating the ratio of the speed of an object to the speed of sound in the medium through which the object is moving |
| machs | number indicating the ratio of the speed of an object to the speed of sound in the medium through which the object is moving |
| MACH | Sound-speed number |
| MACH | Sound-speed ratio number |
| MACH | Number representing speed-sound ratio. |
