word-forming element of Greek origin meaning 1. Definition and synonyms of meta-from the online English dictionary from Macmillan Education. This is the British English definition of meta-.View American English definition of meta-. metr mother. pertaining to or occupying two positions (1, 3) in the benzene ring that are separated by one carbon atom. pertaining to or noting an abstract, high-level analysis or commentary, especially one that consciously references something of its own type. While some claim this meta is an acronym for Most Effective Tactic Available (a folk etymology), it is short for metagaming, using knowledge about the game itself to beat the “game” of mastering that game. Metagame: A game about other games 9. a prefix added to a word to explain that one thing is related to other things. "after, behind; among, between," 2. migr move. (in ancient Rome) a column or post, or a group of columns or posts, placed at each end of a racetrack to mark the turning places. me pass, proceed. This is from PIE *me- "in the middle" (source also of German mit, Gothic miþ, Old … First recorded in 1875–80; independent use of,