1. Deadly; characterized by mass slaughter.
2. Mutually deadly; destructive of both parties (an internecine civil war).
3. Loosely, of or relating to conflict within a group (internecine faculty politics).
1. Deadly; characterized by mass slaughter.
2. Mutually deadly; destructive of both parties (an internecine civil war).
3. Loosely, of or relating to conflict within a group (internecine faculty politics).