Osmundaceae osmundaceae • osmundaceous · · · Info · Definitions · Characters · · Osmundaceae · · Text Latin · · Script 11 · · Length 4 · · Syllables Definitions · · · (noun) large family of ferns widely distributed in temperate and tropical areas. Synonyms: family Osmundaceae. · · Noun Definition 1 Characters · · O latin capital letter o U+004F a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 m latin small letter m U+006D n latin small letter n U+006E s latin small letter s U+0073 u latin small letter u U+0075