bar code

British  

noun

1. Also called: Universal Product Code.   UPC.  commerce a machine-readable arrangement of numbers and parallel lines of different widths printed on a package, which can be electronically scanned at a checkout to register the price of the goods and to activate computer stock-checking and reordering

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bar code Cultural  

1. A series of parallel lines that can be read by an optical scanner and decoded by a computer into usable information. The ten-line Universal Product Code (UPC) on the packaging of retail items is an example of this. The key to this code is the variation in line thickness and separation.

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Example Sentences

See Examples For:

bar code

“It sort of served as the bar code for what became my entire artistic project,” he says.

From The Wall Street Journal ● Jun. 4, 2026

For ticket inspections and to pass through barriers, the app will generate a bar code to scan.

From BBC ● Aug. 31, 2025

The machines scan the bar code on the back of the membership card, showing the membership record, including photo and status.

From Seattle Times ● Jan. 18, 2024

That DNA will act as a kind of minuscule bar code, nestling amid the puffy fibers as they are shuttled to factories in India.

From New York Times ● Apr. 7, 2023

As James and Maddie tugged the book back and forth in front of Emily, the bar code waved like a black-and-white flag until it finally got her attention.

From "Book Scavenger" by Jennifer Chambliss Bertman