coevolution

• co-evolution

From co- +‎ evolution.

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co-evolution

Wikipedia

coevolution (usually uncountable, plural coevolutions)

1. (ecology, evolutionary theory) The evolution of organisms of two or more species in which each adapts to changes in the other.
   • 2005, “Revision of New World Species of Shore Fly Genus Discomyza Meigen (Diptera: Ephydridae)”, in Annals of the Entomological Society of America‎^[1], volume 98, number 4, page 431:

     These species breed in a variety of both terrestrial and marine snails, although there is no obvious pattern of coevolution.

• coevolutionary
• coevolve
• evolutionary arms race