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Meaning of built-up

built-up

Pronunciation: (bilt'up"), [key]
— adj.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.