See more synonyms for built-up on Thesaurus.com
  1. built by the fastening together of several parts or enlarged by the addition of layers: This shoe has a built-up heel.
  2. (of an area) filled in with houses, as an urban region.

Origin of built-up

First recorded in 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for built-up

Historical Examples of built-up

British Dictionary definitions for built-up


  1. having many buildings (esp in the phrase built-up area)
  2. denoting a beam, girder, or stanchion constructed of sections welded, riveted, or bolted together, etc
  3. increased by the addition of partsbuilt-up heels
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