The word "rarefied" in English means: Made less dense or thinner, especially air or gas, Highly refined or elevated; of high moral or intellectual value, Understood or appreciated by only a few people; esoteric.
The phonetic transcription of "rarefied" is /ˈreə.rɪ.faɪd/ in British English and /ˈrer.ə.faɪd/ in American English. Click the 🔊 button to hear both pronunciations.