‖n. [ NL., fr. L. rubellus reddish. ] (Med.) An acute but mild viral infection characterized by a dusky red cutaneous eruption resembling that of measles, but attended by only mild respiratory problems or fever; -- called also German measles. The infective virus is called Rubella virus, or Rubivirus. If contracted by a woman during the first several months of pregnancy, rubella may cause serious abnormalities in the fetus. [ 1913 Webster +PJC ]

n. The virus that causes rubella. [ PJC ]

n. [ L. rubellus reddish. ] A red color used in enameling. Weale. [ 1913 Webster ]

n. [ L. rubellus reddish, dim. of ruber red. ] (Min.) A variety of tourmaline varying in color from a pale rose to a deep ruby, and containing lithium. [ 1913 Webster ]