Of, pertaining to, characterized by or showing adaptation; making or made fit or suitable.
1859, Charles Darwin, S:The_Origin_of_Species/Chapter_XV, The real affinities of all organic beings, in contradistinction to their adaptive resemblances, are due to inheritance or community of descent.
1896, C. Lloyd Morgan, S:On Modification and Variation, That variation of germinal origin is a fact in organic nature is admitted on all hands, and that some variations are adaptive is also unquestioned.
