- tachycardiac⇄adj. of or having to do with tachycardia.
- tachycardiac⇄noun a person with tachycardia.
Ex. One of my tachycardiacs began to ride a bicycle two years ago, and with much advantage (Thomas C. Allbutt). - tachycardiac⇄tachycardiac, adjective, noun.
(Medicine.)