Vietnamese Etymology From French Pasteur. Pronunciation (Hà Nội) IPA(key): [paː˧˧ stəː˧˧] (Huế) IPA(key): [paː˧˧ stəː˧˧] (Saigon) IPA(key): [paː˧˧ stəː˧˧] Phonetic spelling: pa xtơ Proper noun Pa-xtơ A transliteration of the French surname Pasteur Lu-i Pa-xtơ ― Louis PasteurWikiwand - on Seamless Wikipedia browsing. On steroids.