folium foliously • folk · · · Info · Definitions · Characters · · folium · · Text Latin · · Script 6 · · Length Definitions · · · (noun) a thin layer or stratum of (especially metamorphic) rock. · · Noun Definition 1 Characters · · f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F u latin small letter u U+0075