1. Existing at the same time
   "It's essential that any coexisting problems be recognized and treated in their own right";
   - coexistent

1. Exist together or at the same time
   "In this ecosystem, many species coexist peacefully";
   - cohabit
    
2. Coexist peacefully, as of nations
   "Despite their differences, the two communities learned to coexist harmoniously"

See also: synchronal [archaic], synchronic, synchronous

Type of: be, exist

Encyclopedia: Coexisting