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expansion joint

American  

noun

  1. a joint between two parts of a structure, machine, etc., permitting expansion, as from heat, without structural damage.


expansion joint British  

noun

  1. engineering a gap in steel or concrete to allow for thermal expansion

"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

Etymology

Origin of expansion joint

First recorded in 1840–50

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.

See Examples For:

The works then progresses over the following months to bridge waterproofing, concrete repairs, resurfacing, expansion joint replacements, edge beam strengthening, and barrier upgrades.

From BBC Sep. 7, 2025

It’s undetermined whether interlocking steel teeth of the expansion joint will need replacing, Leigh said.

From Seattle Times May 13, 2024

Two lanes of the westbound Tacoma Narrows Bridge will be closed for at least “several days” after a routine inspection found crumbling concrete next to an expansion joint.

From Seattle Times May 13, 2024

Drivers in Everett will encounter another inconvenient truth this week, as major expansion joint work begins for northbound Interstate 5, and lanes close for the five evenings.

From Seattle Times Mar. 5, 2023

We had to leave a place there at the side, an expansion joint, to take care of that.

From Northern Nut Growers Association, Report of the Proceedings at the Fourth Annual Meeting Washington D.C. November 18 and 19, 1913 by Northern Nut Growers Association

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