Definitions

1. adjective

having or characterized by roseola, especially roseola infantum; having or characterized by a rash that appears in a series of crops or waves, often accompanied by fever and other symptoms.

“The child’s roseolous rash was caused by a viral infection.”

2. noun

a condition characterized by a rash that appears in a series of crops or waves, often accompanied by fever and other symptoms.

“The doctor diagnosed the child with roseolous after examining the rash.”