I beam

noun

Definition of I beam

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

First Known Use of I beam

circa 1889, in the meaning defined above

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Time Traveler for I beam

Time Traveler

The first known use of I beam was circa 1889

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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 29 May. 2022.

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