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girder

American  
[gur-der] / ˈgɜr dər /

noun

  1. a large beam, as of steel, reinforced concrete, or timber, for supporting masonry, joists, purlins, etc.

  2. a principal beam of wood, steel, etc., supporting the ends of joists.


girder British  
/ ˈɡɜːdə /

noun

  1. a large beam, esp one made of steel, used in the construction of bridges, buildings, etc

  2. botany the structure composed of tissue providing mechanical support for a stem or leaf

"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

Other Word Forms

  • girderless adjective

Etymology

Origin of girder

First recorded in 1605–15; gird 1 + -er 1

Explanation

A girder is any of the many beams used in buildings and bridges that provide support and actually hold them up. If you've ever seen a building going up, you know the first thing they do is put up a steel or wood skeleton that will eventually take the weight of the roof, the siding, the floors, and all the rooms inside. That skeleton is made of girders. Bridges also are made with girders, but they usually remain visible long after the steel beams in buildings have been covered by glass, brick, and wood.

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Vocabulary lists containing girder

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Scanning the rubble, Ali caught sight of a pink, soot-covered pair of girls’ tracksuit bottoms, hanging from a steel girder jutting out of the heap.

From BBC • Dec. 6, 2024

A new Montlake Interchange is now being built, followed by a concrete girder Portage Bay Bridge, a scenic north Capitol Hill lid, and a busway from 520 into the I-5 Express Lanes.

From Seattle Times • Jan. 27, 2022

The rise of white collar work in downtown L.A. — and the invention of elevators and steel girder construction — also contributed to skyline development at the turn of the century, Deverell said.

From Los Angeles Times • Jan. 26, 2022

They can also penetrate materials that x-rays cannot, enabling researchers to image the interiors of big objects such as a running engine or a steel girder.

From Science Magazine • Nov. 2, 2021

Zeke saw her and Miel get smaller and smaller as the giant robot pelican suit flew him and Daniel, who was still hanging on to the girder, high over the school.

From "Chronicles of a Lizard Nobody" by Patrick Ness