Vietnamese Vietnamese Wikipedia has an article on:chỉ nha khoaWikipedia vi Etymology chỉ (“thread”) + nha khoa (“dentistry”). Pronunciation (Hà Nội) IPA(key): [t͡ɕi˧˩ ɲaː˧˧ xwaː˧˧] (Huế) IPA(key): [t͡ɕɪj˧˨ ɲaː˧˧ kʰwaː˧˧] ~ [t͡ɕɪj˧˨ ɲaː˧˧ xwaː˧˧] (Saigon) IPA(key): [cɪj˨˩˦ ɲaː˧˧ kʰwaː˧˧] ~ [cɪj˨˩˦ ɲaː˧˧ xwaː˧˧] Noun chỉ nha khoa a dental floss Wikiwand - on Seamless Wikipedia browsing. On steroids.