dưỡng khí

== Vietnamese == === Etymology === Sino-Vietnamese word from 氧氣, composed of 氧 (“oxygen”) and 氣 (“gas”). The Chinese character 氧 (dưỡng) is composed of 气 (khí, chemical radical for "gassy" elements) + 養 / 养 (dưỡng, “to nurture”), due to the life-sustaining attribute of oxygen. === Pronunciation === (Hà Nội) IPA(key): [zɨəŋ˦ˀ˥ xi˧˦] (Huế) IPA(key): [jɨəŋ˧˨ kʰɪj˨˩˦] (Saigon) IPA(key): [jɨəŋ˨˩˦ kʰɪj˦˥] === Noun === dưỡng khí (dated) oxygen (molecular oxygen) Synonym: khí oxi ==== Usage notes ==== The word is dated on its own, but it is still frequently used in some contexts and compounds, such as bình dưỡng khí (“scuba”). === See also === thán khí khinh khí