silphium Silphidae • silphium laciniatum · · · Info · Definitions · Characters · · silphium · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) tall North American perennial herbs. Synonyms: Silphium, genus Silphium. · · Noun Definition 1 Characters · · h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D p latin small letter p U+0070 s latin small letter s U+0073 u latin small letter u U+0075