second-degree burn

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A burn that blisters the skin and is more severe than a first-degree burn.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun a burn, more severe than a first-degree burn, that blisters the skin

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun burn causing blisters on the skin and superficial destruction of the dermis