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

Dictionary Entries Near I beam

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 1 Dec. 2023.

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