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
Additionally, electrolyte beverages can be helpful for people with certain other health conditions, such as postural orthostatic tachycardia syndrome (POTS), according to Kate Patton, MEd, RD, CSSD, LD, a dietitian at Cleveland Clinic’s Center for Human Nutrition.
—
Maggie O'Neill, Verywell Health, 18 Sep. 2025
Several months later, she was finally diagnosed with postural orthostatic tachycardia syndrome (POTS), a disorder involving the autonomic nervous system that causes rapid heartbeat, nausea, brain fog, fainting, and fatigue.
—Alexa Mikhail, Fortune, 20 July 2025
They have also previously been diagnosed with bipolar disorder, endometriosis, Ehlers-Danlos syndrome, POTS (postural orthostatic tachycardia syndrome), Sjogren’s syndrome, and MCAS (mast cell activation syndrome).
—Mekishana Pierre, EW.com, 23 June 2025
Sensing the problem, your heart jumps into overdrive, overcompensating by beating way too fast (which is what tachycardia means).
—Rachel Nall, SELF, 17 June 2025
See All Example Sentences for tachycardia
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Maggie O'Neill, Verywell Health, 18 Sep. 2025
Several months later, she was finally diagnosed with postural orthostatic tachycardia syndrome (POTS), a disorder involving the autonomic nervous system that causes rapid heartbeat, nausea, brain fog, fainting, and fatigue.
—Alexa Mikhail, Fortune, 20 July 2025
They have also previously been diagnosed with bipolar disorder, endometriosis, Ehlers-Danlos syndrome, POTS (postural orthostatic tachycardia syndrome), Sjogren’s syndrome, and MCAS (mast cell activation syndrome).
—Mekishana Pierre, EW.com, 23 June 2025
Sensing the problem, your heart jumps into overdrive, overcompensating by beating way too fast (which is what tachycardia means).
—Rachel Nall, SELF, 17 June 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 24 Sep. 2025.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share