SST
Meaning of SST in English
transcription, транскрипция: [ ˌes-ˌes-ˈtē ]
noun
Etymology: s uper s onic t ransport
Date: 1961
: supersonic transport
Merriam-Webster's Collegiate English vocabulary.
Энциклопедический словарь английского языка Merriam Webster.
2003