late 15c., from M.Fr. mondain (12c.), from L. mundanus "belonging to the world" (as distinct from the Church), from mundus "universe, world," lit. "clean, elegant"; used as a transl. of Gk. khosmos (see cosmos) in its Pythagorean sense of "the physical universe" (the original
sense of the Gk. word was "orderly arrangement"). L. mundus also was used of a woman's "ornaments, dress," and is related to the adj. mundus "clean, elegant" (used of women's dress, etc.). Related: Mundanity.
n. [from SF fandom] 1. A person who is not in science fiction fandom. 2. A person who is not in the computer industry. In this sense, most often an adjectival modifier as in "in my mundane life...." See also Real World.
jargon Someone outside some group that is implicit from the context, such as the computer industry or science fiction fandom. The implication is that those in the group are special and those outside are just ordinary. (2000-07-22)