Definition of morbillous in English:

morbillous

Pronunciation /mɔːˈbɪləs/

adjective

rare Pathology
  • Of or relating to measles.

Origin

Late 18th century; earliest use found in Thomas Percival (1740–1804), physician. From post-classical Latin morbillosus afflicted with pustules from morbilli or morbillus + -osus.