thirteenth thirteenfold • thirteenthly · · · Info · Definitions · Synonyms · Characters · · thirteenth · · Text Latin · · Script 10 · · Length Definitions · · · (noun) position 13 in a countable series of things. · · Noun Definition 1 (adj) coming next after the twelfth in position. Synonyms: 13th. · · Adjective Definition 1 Synonyms · · · 13th · · Synonym 1 Characters · · e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074