crossover

noun

1. 1

   a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other

2. 2

   the appropriation of a new style (especially in popular music) by combining elements of different genres in order to appeal to a wider audience

   a jazz-classical crossover album

3. 3

   a voter who is registered as a member of one political party but who votes in the primary of another party

4. 4

   the interchange of sections between pairing homologous chromosomes during the prophase of meiosis