khinh khí cầu

== Vietnamese == === Etymology === Sino-Vietnamese word from 氫氣球, composed of 氫氣 (“hydrogen”) and 球 (“ball”), from Chinese 氫氣球 / 氢气球 (qīngqìqiú). === Pronunciation === (Hà Nội) IPA(key): [xïŋ˧˧ xi˧˦ kəw˨˩] (Huế) IPA(key): [kʰɨn˧˧ kʰɪj˨˩˦ kəw˦˩] (Saigon) IPA(key): [kʰɨn˧˧ kʰɪj˦˥ kəw˨˩] === Noun === (classifier cái, quả, chiếc) khinh khí cầu a hot-air balloon Synonym: khí cầu