
Holophrasis is the prelinguistic use of a single word to express a complex idea. A holophrase may resemble an interjection, but whereas an interjection is linguistic, and has a specific grammatical function, a holophrase is simply a vocalization memorized by rote and used without grammatical intent. Toddlers pass through a holophrastic stage early...
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http://en.wikipedia.org/wiki/Holophrasis

holophrasis 1. The expression of the ideas of a phrase or sentence in one word. 2. An expression of a complex of ideas in a single word.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1647/

the expression of the ideas of a phrase or sentence in one word; polysynthesis: a language characterized by holophrasis.
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https://www.infoplease.com/dictionary/holophrasis
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