heterochthonous

[het-uh-rok-thuh-nuhs]

het·er·och·tho·nous

[het-uh-rok-thuh-nuhs]
adjective
not indigenous; foreign (opposed to autochthonous): heterochthonous flora and fauna.

Origin:
1890–95; hetero- + Greek chthṓn the earth, land, country + -ous
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Heterochthonous has a plethora of syllables.
So is sesquipedalianism. Does it mean:
given to using long words.
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
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