Pronunciation: (blōn'up'), [key]
1. (of a picture, photograph, image, etc.) enlarged.
2. damaged or destroyed by demolition, explosion, etc.: blown-up bridges.
3. (of a ball, balloon, etc.) inflated.
4. overexpanded; unduly large: a blown-up sense of importance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.