SUBSONIC


Meaning of SUBSONIC in English

adjective Etymology: International Scientific Vocabulary Date: 1937 of, relating to, or being a speed less than that of sound in air, moving, capable of moving, or utilizing air currents moving at a ~ speed, infrasonic 1, ~ally adverb

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.