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
Safety and efficacy have not been evaluated in pregnant women, pediatric users, people with active cancer or cancer in remission, or users with uncontrolled hypertension, hypotension, bradycardia or tachycardia.
—
Samantha Agate, Sacbee.com, 3 June 2026
Cust started developing neurological symptoms such as postural orthostatic tachycardia syndrome (POTS) — a disorder that causes a racing heart, dizziness, and near-fainting episodes — that made basic daily tasks nearly impossible.
—Tereza Shkurtaj, PEOPLE, 30 May 2026
Initial withdrawal symptoms include rising blood pressure, tachycardia, agitation and nausea/vomiting, gradually leading to severe hypertension, altered mental status, and possible cardiac or neurologic complications, per the alert.
—Melissa Rudy, FOXNews.com, 2 Apr. 2026
Ventricular tachycardia is a super-fast heartbeat triggered when an electrical wave short-circuits in the organ’s bottom chambers, the ventricles, and prevents them from pumping blood out to the body.
—ABC News, 1 Apr. 2026
See All Example Sentences for tachycardia
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Samantha Agate, Sacbee.com, 3 June 2026
Cust started developing neurological symptoms such as postural orthostatic tachycardia syndrome (POTS) — a disorder that causes a racing heart, dizziness, and near-fainting episodes — that made basic daily tasks nearly impossible.
—Tereza Shkurtaj, PEOPLE, 30 May 2026
Initial withdrawal symptoms include rising blood pressure, tachycardia, agitation and nausea/vomiting, gradually leading to severe hypertension, altered mental status, and possible cardiac or neurologic complications, per the alert.
—Melissa Rudy, FOXNews.com, 2 Apr. 2026
Ventricular tachycardia is a super-fast heartbeat triggered when an electrical wave short-circuits in the organ’s bottom chambers, the ventricles, and prevents them from pumping blood out to the body.
—ABC News, 1 Apr. 2026
See All Example Sentences for tachycardia
Cite this Entry
“Tachycardia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachycardia. Accessed 16 Jun. 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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