Subsonic means "slower than the speed of sound" so a subsonic bullet is any bullet that travels slower than the speed of sound.
Transonic being past the speed of sound and subsonic is below the speed of sound.
subsonic is moving below the speed of sound, supersonic is faster than speed of sound
Subsonic is below or slower than the speed of sound, and supersonic is above or faster than the speed of sound.
Subsonic
Less than the speed of sound in that medium.
subsonic
No. It's subsonic.
If accelerating to the speed of sound, the subsonic.
Subsonic sounds can affect internal organs. Once that is established the mental effects will be clear too.
food
With an effective sound suppressor and subsonic ammunition, the only sound you hear is the slide moving.