external in WordNet English dictionary

1. outward features
   "he enjoyed the solemn externals of religion"
   external 
   

1. happening or arising or located outside or beyond some limits or especially surface
   "the external auditory canal"; "external pressures"
   external 
   
2. coming from the outside
   "extraneous light in the camera spoiled the photograph"; "relying upon an extraneous income"; "disdaining outside pressure groups"
   external  extraneous  outside 
   
3. from or between other countries
   "external commerce"; "international trade"; "developing nations need outside help"
   external  international  outside 
   
4. purely outward or superficial
   "external composure"; "an external concern for reputation"- A.R.Gurney,Jr.
   external