Darwinian adj.

1794, "of or pertaining to the work or thought of English Enlightenment thinker Erasmus Darwin;" 1860 in reference to his grandson, Charles, the biologist. As a noun, 1808 in reference to Erasmus; 1869 as "one who favors or accepts the theory of species evolution by natural selection proposed by Charles Darwin." See Darwin. Related: Darwinianism.