Definition of portmanteau word noun from the Oxford Advanced Learner's Dictionary


portmanteau word

BrE BrE//pɔːtˈmæntəʊ wɜːd//
; NAmE NAmE//pɔːrtˈmæntoʊ wɜːrd//
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a word that is invented by combining the beginning of one word and the end of another and keeping the meaning of each. For example motel is a portmanteau word that is a combination of motor and hotel. See related entries: Grammar Word Originportmanteau coined, in this sense, by Lewis Carroll in Through the Looking Glass (1871).
See the Oxford Advanced American Dictionary entry: portmanteau word