fast-twitch

adjective

ˈfas(t)-ˌtwich How to pronounce fast-twitch (audio)
: of, relating to, or being muscle fiber that contracts quickly especially during brief high-intensity physical activity requiring strength compare slow-twitch

Examples of fast-twitch in a Sentence

Recent Examples on the Web
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.
Quinn is so, so dynamic and maybe in a little bit more fast-twitch way. — Corey Masisak, Denver Post, 3 May 2026 Pairing the two is like trying to solder copper wires to fast-twitch muscle fibers. — Philip Sherburne, Pitchfork, 13 Apr. 2026 Burrows has noted in a study that dogs’ shift to fast-twitch facial muscles wasn’t accidental. — Niranjana Rajalakshmi, Popular Science, 14 May 2026 Power—the explosive, fast-twitch capacity that catches you mid-fall—goes first. — Angela Haupt, Time, 15 May 2026 See All Example Sentences for fast-twitch

Word History

First Known Use

1958, in the meaning defined above

Time Traveler
The first known use of fast-twitch was in 1958

Rhymes for fast-twitch

See All Rhymes for fast-twitch

Browse Nearby Words

fast track
fast-twitch
fastuous
See all Nearby Words

Cite this Entry

“Fast-twitch.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fast-twitch. Accessed 7 Jul. 2026.

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Medical Definition

fast-twitch

adjective
ˌfas(t)-ˌtwich How to pronounce fast-twitch (audio)
: of, relating to, or being muscle fiber that contracts quickly especially during brief high-intensity physical activity requiring strength compare slow-twitch
Last Updated: - Updated example sentences
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