from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A mild viral disease occurring mainly in early childhood, characterized by fever, a rosy-red rash on the cheeks that often spreads to the trunk and limbs, and usually arthritis and malaise. Also called erythema infectiosum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The manifestation as rashes of a particular viral infection.
From its being fifth in frequency of rash-producing childhood diseases.(American Heritage® Dictionary of the English Language, Fourth Edition)
Historically classified as the fifth of the classical childhood skin rashes or exanthems, after measles, scarlet fever, rubella, and Dukes' disease. (Wiktionary)