tachy-

a combining form meaning “swift,” used in the formation of compound words: tachygraphy.
Compare tacho-.

Origin of tachy-

< Greek, combining form of tachýs

Words nearby tachy-

tachistoscope, tacho-, tachogram, tachograph, tachometer, tachy-, tachyarrhythmia, tachycardia, tachycardia window, tachycardia-bradycardia syndrome, tachycardiac

British Dictionary definitions for tachy-

tachy-

tacheo-

combining form

swift or accelerated tachycardia; tachygraphy; tachylyte; tachyon; tachyphylaxis

Word Origin for tachy-

from Greek takhus swift

Medical definitions for tachy-

tachy-

pref.

Rapid; accelerated:tachycardia.