kỉ nguyên

== Vietnamese == === Alternative forms === kỷ nguyên (Southern Vietnam, obsolete) kỉ nguơn, kỷ nguơn === Etymology === Sino-Vietnamese word from 紀元. Compare Japanese 紀元 (Kigen, “Common Era”). See also Công Nguyên. === Pronunciation === (Hà Nội) IPA(key): [ki˧˩ ŋwiən˧˧] (Huế) IPA(key): [kɪj˧˨ ŋwiəŋ˧˧] (Saigon) IPA(key): [kɪj˨˩˦ ŋwiəŋ˧˧] === Noun === kỉ nguyên (literary) age; era