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Mach

1 ENTRIES FOUND:
Mach /ˈmɑːk/ Brit /ˈmæk/ noun
Mach
/ˈmɑːk/ Brit /ˈmæk/
noun
Britannica Dictionary definition of MACH
[noncount] technical
used to indicate the high speed of something (such as an airplane) by comparing it to the speed of sound