variants or T4

Word History

Etymology

probably from thyronine, the amino acid of which thyroxine is a derivative + 4, the number of iodine atoms it contains

First Known Use

1974, in the meaning defined above

Time Traveler
The first known use of T4 was in 1974

Dictionary Entries Near T4

Cite this Entry

“T4.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/T4. Accessed 23 Jul. 2024.

Medical Definition

T4

noun
variants or T4
ˈtē-ˈfō(ə)r

More from Merriam-Webster on T4

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