WordNet (r) 3.0 (2006):
blowup n 1: a violent release of energy caused by a chemical or nuclear reaction [syn: explosion, detonation, blowup] 2: an unrestrained expression of emotion [syn: effusion, gush, outburst, blowup, ebullition] 3: a photographic print that has been enlarged [syn: enlargement, blowup, magnification]