\ ˈmäk-, ˈmȧk- \
Definition of Mach angle
: half of the vertex angle of a Mach cone whose sine is the ratio of the speed of sound to the speed of a moving body
Keep scrolling for more
Test Your Vocabulary
Name that Thing: Flower Edition
-
- Name that flower

Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share Mach angle