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Related to coadaptation: coaptation splint
1. Of or relating to characteristics of two or more species that have evolved through mutually beneficial interactions between the species.
2. Of or relating to alleles at two or more genetic loci that have become established because they are beneficial in combination with each other, but not with other alleles.
co′ad·ap·ta′tion (-ăd-ăp-tā′shən) n.
the state of two or more things adapting to one another
co•ad•ap•ta•tion(ˌkoʊ æd əpˈteɪ ʃən)
1. the correlation of characteristics in two or more interacting organisms or organs resulting from progressive accommodation by natural selection.
2. Also called integration. the accumulation in a population's gene pool of genes that interact by harmonious epistasis in the development of an organism.