genal I. ge·nal\ˈjēnəl, ˈgen-\adjective Etymology:gena + -al : of, relating to, or constituting the cheek or broadly the lateral part of the head < the genal combs of a flea > II. gen·al\ˈjēnəl\adjective Etymology:gene (I) + -al : of, relating to, or caused by a gene