1. Fertilization by the union of male and female gametes from different individuals of the same species
   "cross-fertilisation in plants can lead to increased genetic diversity";
   - cross-fertilization
    
2. Interchange between different cultures or different ways of thinking that is mutually productive and beneficial
   "the cross-fertilisation of science and the creative arts";
   - cross-fertilization

Type of: fecundation, fertilisation [Brit], fertilization, give-and-take, impregnation, interchange, reciprocation

Antonym: self-fertilisation [Brit]

Encyclopedia: Cross-fertilisation