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For other uses, see Portmanteau (disambiguation).
A portmanteau (i//, //; plural portmanteaus or portmanteaux //) or portmanteau word is a linguistic blend of words, in which parts of multiple words, or their phones (sounds), and their meanings are combined into a new word. Originally, the word "portmanteau" refers to a suitcase that opens into two equal sections.
A portmanteau word fuses both the sounds and the meanings of its components, as in smog, coined by blending smoke and fog, or motel, from motor and hotel. In linguistics, a portmanteau is defined as a single morph which represents two or moremorphemes.
The definition overlaps with the grammatical term contraction, but contractions are formed from words that would otherwise appear together in sequence, such as do and not to make don't, whereas a portmanteau word is formed by combining two or more existing words that all relate to a singular concept which the portmanteau describes.