vt to mount by steps; to go through with step by step.
2. scan ·vt to go over and examine point by point; to examine with care; to look closely at or into; to scrutinize.
3. scan ·vt specifically (pros.), to go through with, as a verse, marking and distinguishing the feet of which it is composed; to show, in reading, the metrical structure of; to recite metrically.