adj. Of, relating to, or capable of speed equal to or exceeding five times the speed of sound. hy′per·son′i·cal·ly adv.

What does hypersonic mean?

1 : of or relating to speed five or more times that of sound in air — compare sonic. 2 : moving, capable of moving, or utilizing air currents that move at hypersonic speed hypersonic wind tunnel. Other Words from hypersonic More Example Sentences Learn More About hypersonic.

What part of speech is hypersonic?

hypersonic. / (ˌhaɪpəˈsɒnɪk) / adjective.