subsonic in Finnish
subsonic in Finnish
aliääni-
(of a speed) (aviation) less than the speed of sound (in the same medium, and at the same temperature and pressure)
aliääninen
(of a speed) (aviation) less than the speed of sound (in the same medium, and at the same temperature and pressure)
aliääninopeuksinen
(of a speed) (aviation) less than the speed of sound (in the same medium, and at the same temperature and pressure)
ääntä hitaampi
(of a speed) (aviation) less than the speed of sound (in the same medium, and at the same temperature and pressure)