Associations to the word «Subsonic»

Wiktionary

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

Dictionary definition

SUBSONIC, adjective. (of speed) less than that of sound in a designated medium; "aircraft flying at subsonic speeds".

Wise words

Be generous with kindly words, especially about those who are absent.
Johann Wolfgang von Goethe