mainstream mainstay • mainstreamed · · · Info · Definitions · Characters · · mainstream · · Text Latin · · Script 10 · · Length 2 · · Syllables Definitions · · · (noun) the prevailing current of thought. Example: "His thinking was in the american mainstream." · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074