phreno-youdaoicibaDictYouDict[phreno- 词源字典]
before vowels phren-, word-forming element meaning "mind," also "diaphragm," from Greek phreno-, comb. form of phrene properly "diaphragm, muscle which parts the abdomen from the thorax;" in Homer extended to "parts around the heart, breast," hence "heart" (as a seat of passions), "mind, seat of thoughts, wits, senses," of unknown origin.[phreno- etymology, phreno- origin, 英语词源]