optical scanning

noun
the process of interpreting data in printed, handwritten, bar-code, or other visual form by a device (optical scanner or reader) that scans and identifies the data.

Origin:
1955–60

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Optical scanning is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a fool or simpleton; ninny.
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Example sentences
Optical scanning reads typed and computer printed data and electronically
  converts it for computer processing.
Operate an optical scanning devise to sort mail by bar code.
After the polls close, the machine-printed ballots would be counted by hand or
  by optical scanning.
The disc is read by an optical scanning mechanism that uses a high-intensity
  light source, such as a laser.
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