| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a gadget; dingus; thingumbob. |
supersonic su·per·son·ic (s&oomacr;'pər-sŏn'ĭk)
adj.
Having, caused by, or relating to a speed greater than the speed of sound in a given medium, especially air.
Of or relating to sound waves beyond human audibility.
supersonic (s 'pər-sŏn'ĭk) Pronunciation Key
Having a speed greater than that of sound in a designated medium, usually air; having a speed greater than Mach 1. Compare hypersonic, subsonic, transonic. |