nounpl. ex·an·them·a·ta, or ex·an·the·mas also ex·an·thems
- A skin eruption accompanying certain infectious diseases.
- A disease, such as measles or scarlet fever, accompanied by a skin eruption.
Origin of exanthemaLate Latin exanthēma from Greek eruption from exanthein to burst forth ex- ex- anthein to blossom ( from anthos flower )
- ex·an′the·mat′ic ex′an·them′a·tous