Definition of "discoloration" [dis•col•or•a•tion]

• The act of discoloring. (noun)
• The condition of being discolored. (noun)
• A discolored spot, smudge, or area; a stain. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "(Soundbite of laughter) SAGAL: Experts say TSS is causes stinging rashes, permanent skin discoloration, and in rare cases, infertility, which if you are a cast member on "Jersey Shore," might not be such a bad thing."
• "In one recent case, a 12-year-old boy developed a sponge-patterned skin discoloration on his left thigh after playing computer games a few hours every day for several months."
• "The towering plant, identified by its white-flowered weeds, spreads fast and causes itching and skin discoloration that can last for as long as one year, the Chicago Tribune reported."