T3

noun

ˈtē-ˈthrē How to pronounce T3 (audio)
variants or T3
: triiodothyronine

Examples of T3 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.
Julian Sayin, Ohio State (5) T3. — Barry Jackson, Miami Herald, 29 Apr. 2026 Some women may see T3 thyroid hormone decline on IF. — Allison Palmer, Charlotte Observer, 10 June 2026 Young entered the week on the strength of back-to-back high finishes at Riviera (T7) and Bay Hill (T3). — Justin Ray, New York Times, 14 Mar. 2026 As a category-defining force in the haircare industry, T3 Micro is known for its design, technology, and performance. — Lydia T. Blanco, Forbes.com, 25 June 2026 See All Example Sentences for T3

Word History

Etymology

T, abbreviation for thyronine + 3, number of iodine atoms attached to the thyronine nucleus

First Known Use

1956, in the meaning defined above

Time Traveler
The first known use of T3 was in 1956

Browse Nearby Words

T'u-lao
T3
T4
See all Nearby Words

Cite this Entry

“T3.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/T3. Accessed 8 Jul. 2026.

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Medical Definition

Last Updated: - Updated example sentences
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