Roseola Ro*se"o*la, n. [NL., dim. of L. rosa a rose.] (med.) A rose-colored efflorescence upon the skin, occurring in circumscribed patches of little or no elevation and often alternately fading and reviving; also, an acute specific disease which is characterized by an eruption of this character; -- called also {rose rash}. -- {Ro*se"o*lous}, a. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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