Source : WordNet®

cross-fertilisation
     n 1: fertilization by the union of male and female gametes from
          different individual of the same species [syn: {cross-fertilization}]
          [ant: {self-fertilization}]
     2: interchange between different cultures or different ways of
        thinking that is mutually productive and beneficial; "the
        cross-fertilization of science and the creative arts"
        [syn: {cross-fertilization}]