Meaning

verb examine minutely or intensely

noun the act of scanning; systematic examination of a prescribed region

verb examine hastily

originFrom late Middle English scanne (“to mark off verse to show metrical structure”), from earlier scanden, from Late Latin scandere (“to scan verse”), from Classical Latin scandō (“to climb, rise, mount”), from Proto-Indo-European *skend- (“to jump, dart, climb, scale, scan”).

Etymology from Wiktionary, CC BY-SA 3.0