Subsonic

Pronunciation

• Rhymes: -É’nɪk

Full definition of subsonic

Adjective

1. (of a sound) having a frequency too low to be audible
2. (of a speed) less than the speed of sound (in the same medium, and at the same temperature and pressure)
3. (fluid mechanics, of a flow) with a Mach number such that 0.3 < Ma < 0.8 (approximately - the exact limits vary between sources).

Related terms

• plasmasonic
• hypersonic
• supersonic
• transonic