thán khí

Vietnamese

Etymology

Sino-Vietnamese word from 碳 (“carbon”) and 氣 (“gas”). The Chinese character 碳 (thán) is composed of 石 (thạch, “rock”, chemical radical for "non-gassy" nonmetal elements) + 炭 (thán, “coal”), due to the carbonic makeup of coal. See also than đá (“coal”) and Than Đá (“Carboniferous”) which are from Chinese 石炭 (thạch thán, literally “rocky coal”). Compare Chinese 炭氣／炭气 (thán khí).

Pronunciation

• (Hà Nội) IPA^(key): [tʰaːn˧˦ xi˧˦]
• (Huế) IPA^(key): [tʰaːŋ˦˧˥ kʰɪj˨˩˦] ~ [tʰaːŋ˦˧˥ xɪj˨˩˦]
• (Saigon) IPA^(key): [tʰaːŋ˦˥ kʰɪj˦˥] ~ [tʰaːŋ˦˥ xɪj˦˥]

Noun

thán khí

1. (obsolete) carbon dioxide

   Synonym: khí cacbonic

See also

• dưỡng khí
• khinh khí