[ gur-der ]
/ ˈgɜr dər /


a large beam, as of steel, reinforced concrete, or timber, for supporting masonry, joists, purlins, etc.
a principal beam of wood, steel, etc., supporting the ends of joists.

Origin of girder

First recorded in 1605–15; gird1 + -er1

Related forms

gird·er·less, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for girder

British Dictionary definitions for girder


/ (ˈɡɜːdə) /


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