polysynthesism

[ pol-i-sin-thuh-siz-uh m ]
/ ˌpɒl ɪˈsɪn θəˌsɪz əm /

noun

the synthesis of various elements.
the combining of several words of a sentence into one word.

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Origin of polysynthesism

First recorded in 1880–85; poly- + synthes(is) + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020