squadronyoudaoicibaDictYouDict[squadron 词源字典]
squadron: [16] A squadron is etymologically a ‘square’. The current sense ‘military group’ comes from an earlier ‘square formation of troops’. The word was borrowed from Italian squadrone, a derivative of squadra ‘square’, which comes from the same source as English square. The related squad [17] comes from French escouade, an alteration of escadre, which was acquired from Italian squadra.
=> quarter, square[squadron etymology, squadron origin, 英语词源]
squadron (n.)youdaoicibaDictYouDict
1560s, from Italian squadrone, augmentative of squadra "battalion," literally "square" (see squad). As a division of a fleet, from 1580s, of an air force, 1912.