Definition of visualizing:
(v) :
(transitive) To form a mental picture of (something); to picture (something) in the mind; to envisage.
(v) :
(transitive) To perceive (something) visually; to see.
(v) :
(transitive) To depict (something) in a way which can be seen.
(v) :
(intransitive) To perceive something visually.
(v) :
(transitive) (chiefly medicine) To make (a hidden or unclear body part, process, or object) visible by optical methods (such as endoscopy, magnetic resonance imaging, ultrasound, or X-rays), or other techniques.
(v) :
(intransitive) To form a mental picture of something; to picture something in the mind.