partneryoudaoicibaDictYouDict[partner 词源字典]
partner: [14] Partner is related to part – but not quite so directly as might appear. When it first entered the language it was in the form parcener [13], which remains in existence as a legal term meaning ‘joint heir’. This came via Anglo- Norman parcener ‘partner’ from Vulgar Latin *partiōnārius, a derivative of Latin partītiō ‘partition’ (source of English partition [15]). This in turn was based on the verb partīrī ‘divide up’, a derivative of pars ‘part’. The change from parcener to partner began in the 14th century, prompted by the similarity to part.
=> part, partition[partner etymology, partner origin, 英语词源]
partner (n.)youdaoicibaDictYouDict
c. 1300, altered from parcener (late 13c.), from Old French parçonier "partner, associate; joint owner, joint heir," from parçon "partition, division. portion, share, lot," from Latin partitionem (nominative partitio) "a sharing, partition, division, distribution" (see partition (n.)). Form in English influenced by part (n.). The word also may represent Old French part tenour "part holder."
partner (v.)youdaoicibaDictYouDict
1610s, transitive, "to make a partner," from partner (n.). Intransitive sense from 1961. Related: Partnered; partnering.