I beam

noun

: an iron or steel beam that is I-shaped in cross section

Word History

First Known Use

circa 1889, in the meaning defined above

Time Traveler
The first known use of I beam was circa 1889

Rhymes for I beam

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Browse Nearby Words

I bar
I beam
Iberia
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Cite this Entry

“I beam.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/I%20beam. Accessed 4 Jul. 2025.

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