Where does “crosshybridization” come from?

crosshybridization (English) comes from English cross-, from Irish cros-, from Irish cros, from Old Irish cros, from Latin crux, from Proto-Italic *kruks, from Proto-Indo-European sḱer- — to caw, crow.

crosshybridization (English): hybridization between nucleic acids that have different sequences, and are typically derived from orthologous or paralogous genes