adj.
 forming, situated on, or relating to the outside. 
▸(in filming) outdoor.
n.
  - the outer surface or structure of something. 
▸a person's apparent behaviour or demeanour.
 - (in filming) an outdoor scene.
 
 
  Derivative
  
    - exteriority n.
  - exteriorization
 or exteriorisation n.  - exteriorize
 or exteriorise v.  - exteriorly adv.
 
   
  Etymology
  C16: from L., compar. of exter ‘outer’.