hypersonic
Adj
- Equal to, or greater than, or capable of achieving, five times the speed of sound.
- Far enough above the speed of sound as to cause significant differences in behaviour due to chemical reactions or dissociation of the air.
Origin / Etymology
From hyper- + sonic. A doublet of supersonic.
Scrabble Score: 20
hypersonic: valid Scrabble (US) TWL Wordhypersonic: valid Scrabble Word in Merriam-Webster MW Dictionary
hypersonic: valid Scrabble Word in International Collins CSW Dictionary
Words With Friends Score: 21
hypersonic: valid Words With Friends Word