chí tuyến

== Vietnamese == === Etymology === chí (“most”) +‎ tuyến (“line”). Likely clipped from 夏至線 / 夏至线 (Xiàzhìxiàn) and 冬至線 / 冬至线 (Dōngzhìxiàn). === Pronunciation === (Hà Nội) IPA(key): [t͡ɕi˧˦ twiən˧˦] (Huế) IPA(key): [t͡ɕɪj˨˩˦ twiəŋ˦˧˥] (Saigon) IPA(key): [cɪj˦˥ t⁽ʷ⁾iəŋ˦˥] === Noun === chí tuyến • (至線) (geography) a tropic (latitude boundary of the torrid zone) Chí tuyến Bắc ― The Tropic of Cancer; The Northern Tropic Chí tuyến Nam ― The Tropic of Capricorn; The Southern Tropic