"next in order after the forty-ninth; an ordinal numeral; being one of fifty equal parts into which a whole is regarded as divided;" Old English fifteogoða "fiftieth;" see fifty + -th (1). Compare Old Norse fimmtugande, and, with a different suffix, Old Frisian fiftichsta, Dutch vijftigste, Old High German fimfzugsto, German fünfzigste.