Noah Webster
Exanthema
EXAN'THEMA, noun plural exanthem'ata. [Gr. to blossom; a flower.]
Among physicians, eruption; a breaking out; pustules, petechiae, or vibices; any efflorescence on the skin, as in measles, small pox, scarlatina, etc.
This term is now limited by systematic nosologists, to such eruptions as are accompanied with fever.