Mach
|Mach|
B2
/mɑːk/
speed relative to sound
Etymology
Etymology Information
'Mach' originates from the name of the Austrian physicist 'Ernst Mach', who studied the physics of supersonic motion.
Historical Evolution
'Mach' was adopted into English in the early 20th century to describe speeds relative to the speed of sound.
Meaning Changes
Initially, it referred to the speed of sound, but over time it evolved to describe speeds relative to the speed of sound.
Meanings by Part of Speech
Last updated: 2025/02/27 18:37