subsonic
🇺🇸
/ˌsʌbˈsɑːnɪk/
🇬🇧
/ˌsʌbˈsɒnɪk/
adjective
R
Moving slower than the speed at which sound travels.
The subsonic aircraft was designed for quiet and efficient travel.
저음속 항공기는 조용하고 효율적인 여행을 위해 설계되었습니다.
translation
아음속