Etymology

symbiogenesis

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Today it means: The merging of two separate organisms to form a single new organism. Full definition →

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The story

From sym- + bio- + -genesis. Coined in German by the Russian lichenologist Konstantin Mereschkowski, in a 1910 paper entitled "Theorie der zwei Plasmaarten als Grundlage der Symbiogenesis, einer neuen Lehre von der Entstehung der Organismen."

Etymology from Wiktionary, CC BY-SA 4.0.