fiftieth(the person or thing in the fiftieth position) noun [UK: ˈfɪf.tɪəθ] [US: ˈfɪf.tiəθ]Shortly before her fiftieth birthday, she received the news about the birth of her grandchild. = Poco antes de su quincuagésimo cumpleaños, ella recibió la noticia del nacimiento de su nieto.
quincuagésimoadjective
fiftieth(the ordinal form of the number fifty) adjective [UK: ˈfɪf.tɪəθ] [US: ˈfɪf.tiəθ]Shortly before her fiftieth birthday, she received the news about the birth of her grandchild. = Poco antes de su quincuagésimo cumpleaños, ella recibió la noticia del nacimiento de su nieto.