Noun blowup has 3 senses
  1. explosion, detonation, blowup - a violent release of energy caused by a chemical or nuclear reaction
    --1 is a kind of discharge
    --1 has particulars:
     airburst; blast; backfire; big bang; blowback; fragmentation; inflation
    Derived form: verb blow up1
  2. effusion, gush, outburst, blowup, ebullition - an unrestrained expression of emotion
    --2 is a kind of expression, manifestation, reflection, reflexion
    --2 has particulars: acting out; cry; explosion; flare
    Derived form: verb blow up3
  3. enlargement, blowup, magnification - a photographic print that has been enlarged
    --3 is a kind of photograph, photo, exposure, pic
    Derived form: verb blow up2