柯林斯詞典octogenarian /??kt??d???n??r??n/ (octogenarians) 1. N-COUNT An octogenarian is a person who is between eighty and eighty-nine years old. 八旬老人 返回 octogenarian劍橋詞典a person who is between 80 and 89 years old 八旬老人，80至89嵗的人 返回 octogenarian