scan (Noun) — The act of scanning; systematic examination of a prescribed region. ex. "he made a thorough scan of the beach with his binoculars"
scan (Noun) — An image produced by scanning. ex. "he analysed the brain scan" ex. "you could see the tumour in the CAT scan"
scan (Verb) — Examine minutely or intensely. ex. "the surgeon scanned the X-ray"
scan (Verb) — Examine hastily. ex. "She scanned the newspaper headlines while waiting for the taxi"
scan (Verb) — Make a wide, sweeping search of. ex. "The beams scanned the night sky"
scan (Verb) — (poetry) conform to a metrical pattern.
scan (Verb) — Move a light beam over; in electronics, to reproduce an image.
scan (Verb) — Read metrically. ex. "scan verses"
scan (Verb) — Obtain data from magnetic tapes.