transcription, транскрипция: [ ˌsəb-ˈsä-nik ]
adjective
Etymology: International Scientific Vocabulary
Date: 1937
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