tachycardia
noun
tachy·car·dia
ˌta-ki-ˈkär-dē-ə 
: relatively rapid heart action whether physiological (as after exercise) or pathological compare bradycardia
Examples of tachycardia in a Sentence
Recent Examples on the Web
Veteran center Kristaps Porzingis has missed 29 games this season because of lingering symptoms of postural orthostatic tachycardia syndrome, as well as various injuries, including, more recently, left Achilles tendinitis.
—
Lauren Williams, AJC.com, 23 Jan. 2026
About one in four experienced episodes of ventricular tachycardia, a rapid heart rhythm that can become life-threatening if sustained.
—Peter Burke, FOXNews.com, 17 Jan. 2026
Doernbecher Children’s Hospital patient diagnosed with catecholaminergic polymorphic ventricular tachycardia.
—Riley Jones, Footwear News, 7 Jan. 2026
Conditions like anemia can cause tachycardia by making your heart beat faster.
—Mark Gurarie, Health, 12 Oct. 2025
See All Example Sentences for tachycardia
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Lauren Williams, AJC.com, 23 Jan. 2026
About one in four experienced episodes of ventricular tachycardia, a rapid heart rhythm that can become life-threatening if sustained.
—Peter Burke, FOXNews.com, 17 Jan. 2026
Doernbecher Children’s Hospital patient diagnosed with catecholaminergic polymorphic ventricular tachycardia.
—Riley Jones, Footwear News, 7 Jan. 2026
Conditions like anemia can cause tachycardia by making your heart beat faster.
—Mark Gurarie, Health, 12 Oct. 2025
See All Example Sentences for tachycardia
Cite this Entry
“Tachycardia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachycardia. Accessed 29 Jan. 2026.
Copy CitationMedical Definition
tachycardia
noun
tachy·car·dia
ˌtak-i-ˈkärd-ē-ə
: relatively rapid heart action whether physiological (as after exercise) or pathological see junctional tachycardia, paroxysmal tachycardia, sinus tachycardia, ventricular tachycardia compare bradycardia
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