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I-bar

[ahy-bahr] /ˈaɪˌbɑr/
noun
1.
an I-beam used for structural support, as in buildings or bridges.
Origin of I-bar
1885-1890
1885-90

I-beam

[ahy-beem] /ˈaɪˌbim/
noun
1.
a rolled or extruded metal beam having a cross section resembling an I.
Compare H-beam.
Also called I-bar [ahy-bahr] /ˈaɪˌbɑr/ (Show IPA).
Origin
1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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British Dictionary definitions for I-bar

I-beam

noun
1.
a rolled steel joist or a girder with a cross section in the form of a capital letter I Compare H-beam
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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