Word History


supersonic transport

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of SST was in 1961

Dictionary Entries Near SST

Cite this Entry

“SST.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/SST. Accessed 18 Jul. 2024.

Kids Definition

: an airplane used to transport people and goods at supersonic speeds
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