subsonic

sub·son·ic

adj \ˌsəb-ˈsä-nik\

Definition of SUBSONIC

1

: of, relating to, or being a speed less than that of sound in air

2

: moving, capable of moving, or utilizing air currents moving at a subsonic speed

3

: infrasonic 1

— sub·son·i·cal·ly \-ni-k(ə-)lē\ adverb

Origin of SUBSONIC

International Scientific Vocabulary

First Known Use: 1937

Rhymes with SUBSONIC

Aaronic, atonic, benthonic, bionic, boronic, Brittonic, Brythonic, bubonic, Byronic, canonic, carbonic, colonic, cyclonic, daimonic, demonic, draconic, dystonic, euphonic, hadronic, harmonic, hedonic, hydronic, iconic, ionic, Ionic, laconic, Masonic, mnemonic, moronic, neutronic, photonic, phytonic, planktonic, platonic, plutonic, pneumonic, pythonic, sardonic, sermonic, Slavonic, symphonic, synchronic, tectonic, Teutonic, transonic