a. To form a mental image of; envisage: tried to visualize the scene as it was described.

b. To engage in psychological visualization with regard to (pain or a body process, for example).

a. To render visible, as in an image or representation: "Movies have always been keen to visualize the gorier details of ocular trauma" (Dennis Lim).

b. To produce an image or visual representation of (an internal body part or action, for example) by radiological or other technology.