Definition of orbital adjective from the Oxford Advanced Learner's Dictionary

orbital

adjective
ˈɔːbɪtl
 
; ˈɔːrbɪtl
 
 
[only before noun]1 connected with the orbit of a planet or object in space2 (British English) (of a road) built around the edge of a town or city to reduce the amount of traffic travelling through the centre