a new word formed by joining two others and combining their meanings; "`smog' is a blend of `smoke' and `fog'"; "`motel' is a portmanteau word made by combining `motor' and `hotel'"; "`brunch' is a well-known portmanteau"

a new word formed by joining two others and combining their meanings which, literary lesson aside, defines the culmination of any weekend - Brunch

a word that is formed by combining two words and their meanings

The process of making a new word by putting two familiar words together, used often in tech speak. For an example, see webinar below.

A portmanteau (plural: portmanteaus or portmanteaux) (IPA pronunciation: ) or blend is a word or morpheme that fuses two or more words or parts of words to give a combined meaning. A folk usage of portmanteau refers to a word that is formed by combining both sounds and meanings from two or more words (e.g. spork or foon from spoon/fork and fork/spoon, respectively; "animatronics" from "animation" and "electronics"; or "blaxploitation" from "black" and "exploitation"). Typically, portmanteau words are neologisms.