directional
direction-finding
directionless
direction-listening
directive
directivity
direct-lift
direct-loaded
directly
direct-observation
  director
director-operated
directory
direct-reading
direct-reduction
directrix
direct-shadow
direct-shipping
direct-smelting
direct-viewing
direct-vision

    director dead area

    мертвая зона прибора управления артиллерийским зенитным огнем