tachyarrhythmia

noun

tachy·ar·rhyth·mia ˌta-kē-ā-ˈrit͟h-mē-ə

: arrhythmia characterized by a rapid irregular heartbeat

Word History

Etymology

New Latin

First Known Use

1926, in the meaning defined above

Time Traveler

The first known use of tachyarrhythmia was in 1926

See more words from the same year

Browse Nearby Words

tachy-

tachyarrhythmia

tachyauxesis

See all Nearby Words

Cite this Entry

Style

“Tachyarrhythmia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachyarrhythmia. Accessed 3 Nov. 2025.

Copy Citation

Medical Definition

tachyarrhythmia

noun

tachy·ar·rhyth·mia ˌtak-ē-ā-ˈrit͟h-mē-ə

: arrhythmia characterized by a rapid irregular heartbeat

Popular in Grammar & Usage

'Affect' vs. 'Effect'

Using Bullet Points ( • )

The Difference Between 'i.e.' and 'e.g.'

What’s the difference between ‘cemetery’ and ‘graveyard’?

Democracy or Republic: What's the difference?

Popular in Wordplay

tachyarrhythmia

noun

Word History

Browse Nearby Words

Cite this Entry

Medical Definition

More from Merriam-Webster

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

fidelity