ˌcross-ˈfertilize BrE AmE ( also cross-fertilise British English ) verb [transitive]
1 . to combine the male sex cells from one type of plant with female sex cells from another
2 . to influence someone or something with ideas from other areas:
In a university students live together, encourage, support, and cross-fertilise each other.
—ˌcross-fertiliˈzation noun [uncountable]