mandarinyoudaoicibaDictYouDict[mandarin 词源字典]
mandarin: [16] Although it refers to a Chinese official, mandarin is not a Chinese word. Sanskrit mantrin meant ‘counsellor’ (it was a derivative of mantra ‘counsel’, which itself was based on man ‘think’, a distant relative of English mind). Its Hindi descendant mantrī passed into English via Malay mẽteri and Portuguese mandarin. The word’s application to a variety of small loose-skinned orange, which dates in English from the 19th century, was inspired by the yellow robes worn by mandarins.
=> mind[mandarin etymology, mandarin origin, 英语词源]
mandarin (n.)youdaoicibaDictYouDict
"Chinese official," 1580s, via Portuguese mandarim or older Dutch mandorijn from Malay mantri, from Hindi mantri "councilor, minister of state," from Sanskrit mantri, nominative of mantrin- "advisor," from mantra "counsel," from PIE root *men- "to think" (see mind (n.)).

Form influenced in Portuguese by mandar "to command, order." Used generically for the several grades of Chinese officials; sense of "chief dialect of Chinese" (spoken by officials and educated people) is from c. 1600. Transferred sense of "important person" attested by 1907. The type of small, deep-colored orange so called from 1771, from resemblance of its color to that of robes worn by mandarins.