Revolution (5)
'revolution' is the definition.
(orbit is a kind of revolution)
This is all the clue.
(Other definitions for orbit that I've seen before include "Satellite's path" , "field of activity" , "Circumnavigate" , "Circuit of a planet" , "Sphere of action" .)
(Other definitions for industrial that I've seen before include "Type of action" , "plants may be so described" , "Rapid social changes, starting in Britain from about 1760" , "Relating to manufacture" , "Like manufacturing" .)