CADUCITY Meaning of CADUCITY in English [ kə'dju:sɪti ]■ noun literary frailty or transitory nature. ↘the infirmity of old age; senility.OriginC18: from Fr. caducité , from L. caducus (see caducous ). Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004