- a combining form meaning “swift,” used in the formation of compound words: tachygraphy.
Origin of tachy-
< Greek, combining form of tachýs
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- swift or acceleratedtachycardia; tachygraphy; tachylyte; tachyon; tachyphylaxis
from Greek takhus swift
Word Origin and History for tachy-
word-forming element meaning "rapid, swift, fast," from Latinized comb. form of Greek takhy "swift."
Online Etymology Dictionary, © 2010 Douglas Harper
- Rapid; accelerated:tachycardia.