Mach angle
noun
ˈmäk-,
ˈmȧk-
: 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
Word History
Etymology
after Ernst Mach †1916 Austrian physicist and philosopher
- quadrille paper
- quadrilled
- penny-wise and pound-foolish
- penny-wise and/but pound-foolish
- penny-wise but pound-foolish
- pennycress
- pennycresses
- pennyflower
- pennyland
- pennyprick
- pennyroyal
- pennyroyals
- pennysiller
- pennystone
- pennystones
- pennyweight
- pennyweighter
- pennyweights
- pennywhistle
- pennywhistles
- pennywinkle
- pennywinkles
- pennywort
- pennyworth
- pennyworths