In linguistics, a blend—sometimes known, perhaps more narrowly, as a blend word, lexical blend, portmanteau (pl. portmanteaux), or portmanteau word (pɔrtˈmæntoʊ, ˌpɔr(t)mænˈtoʊ)—is a word formed, usually intentionally, by combining the sounds and meanings of two or more words together. English examples include smog, coined by blending smoke and fog, as well as motel, from motor (motorist) and hotel.
A blend is similar to a contraction, but contractions are formed, usually non-intentionally, from words whose sounds gradually drift together over time due to them commonly appearing together in sequence, such as do not naturally becoming don't. A blend also differs from a compound, which fully preserves the stems of the original words. The 1973 Introduction to Modern English Word-Formation explains that "In words such as motel, boatel and Lorry-Tel, hotel is represented by various shorter substitutes – otel, tel, or el – which I shall call splinters. Words containing splinters I shall call blends". Thus, at least one of the parts of a blend, strictly speaking, is not a complete morpheme, but instead a mere splinter or leftover word fragment. For instance, starfish is a compound, not a blend, of star and fish, as it includes both words in full. However, if it were called a "stish" or a "starsh", it would be a blend. Furthermore, when blends are formed by shortening established compounds or phrases, they can be considered clipped compounds, such as romcom for romantic comedy.
Blends of two or more words may be classified from each of three viewpoints: morphotactic, morphonological, and morphosemantic.
Blends may be classified morphotactically into two kinds: total and partial.
In a total blend, each of the words creating the blend is reduced to a mere splinter. Some linguists limit blends to these (perhaps with additional conditions): for example, Ingo Plag considers "proper blends" to be total blends that semantically are coordinate, the remainder being "shortened compounds".