codirection

Noun

codirection (countable and uncountable, plural codirections)

1. (uncountable) The joint direction of a film, organization, venture, etc.
   • Under the first of these, 5 collaborative research training fellowship projects were approved, on the following topics: stages of expansion of the railroads in Peru and their impact on its economy, under codirection of Heraclio Bonilla, Institute of Peruvian Sudies, Lima, and Marcello Carmagani...1968, Annual Report - Social Science Research Council, page 41
   • Kitschy French music over the sound track inflates the Gallic jest to the max (Altman felt the film would be too inconsequential without it), as do the credits, which acknowledge the codirection of "Robert Vieux-homme" and the producing work of "Robert Oeufenweiler."2003, Jan Stuart, The Nashville Chronicles: The Making of Robert Altman's Masterpiece, →ISBN
2. (countable) An equation for a hyperplane in the tangent space modulo a factor that is a positive constant; cotangent direction.
   • It can be shown that the set of hyperbolic codirections consists of distinct pairs of oppositely-directed convex cones.2003, Krishan L. Duggal, Ramesh Sharma, Recent Advances in Riemannian and Lorentzian Geometries, page 80
3. (uncountable) Colinearity.