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scanner British & World English

A device for examining, reading, or monitoring something, in particular:

body scanner British & World English

A scanner using radiation, ultrasound, or magnetic resonance imaging in order to examine the entire body

optical scanner British & World English

A device which performs optical character recognition and produces coded signals corresponding to the characters identified

retinal scanner British & World English

A biometric device that scans a person’s or animal’s retina in infrared for identification purposes