"rapid heartbeat," 1868, Modern Latin, coined 1867 by German-born physician Hermann Lebert (1813-1878) from tachy- "swift" + Latinized form of Greek kardia "heart," from PIE root *kerd- "heart."
tace
tacet
tacho-
tachometer
tachy-
tachycardia
tachygraphy
tachymeter
tachyon
tachypnea
tacit
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