1. Come into being or existence, or appear on the scene
   "Then the computer came along and changed our lives";
   - appear
    
2. Improve in performance or condition; develop and move forward
   "My plants are coming along";
   - progress, come on, advance, get on, get along, shape up

Derived forms: coming along, came along, come along, comes along

Type of: change, develop

Encyclopedia: Come along, John