Conduct  —n. 1 behaviour. 2 activity or manner of directing or managing (a business, war, etc.). —v. 1 lead or guide. 2 direct or manage (a business etc.). 3 (also absol.) Be the conductor of (an orchestra etc.). 4 transmit (heat, electricity, etc.) By conduction. 5 refl. Behave. [latin duco duct- lead]