WordWeb Online

1. A natural consequence of development
   - branch, offshoot, offset
    
2. The gradual beginning or coming forth
   - emergence, growth
    
3. A natural prolongation or projection from a part of an organism either animal or plant
   "a bony outgrowth";
   - process, appendage

Derived forms: outgrowths

Type of: beginning, body part, consequence, effect, event, issue, outcome, result, upshot