swelling

Noun

• the increase in volume of certain substances when they are heated (often accompanied by release of water)

• something that bulges out or is protuberant or projects from its surroundings
  • the gun in his pocket made an obvious bulge
    
  • the hump of a camel
    
  • he stood on the rocky prominence
    
  • the occipital protuberance was well developed
    
  • the bony excrescence between its horns
    

• an abnormal protuberance or localized enlargement

Related words

• Synonyms: 
  intumescence , intumescency , puffiness , lump