barcode
barcode — noun
1. A barcode is a rectangular pattern of black lines with different widths, printed
A barcode is a rectangular pattern of black lines with different widths, printed on the outside of a product or its package. The pattern stores coded details such as the item's price and identification number, which a laser scanner or camera can read and process automatically.
The cashier scanned the barcode on the cereal box, and the price appeared on screen.
barcode + on + product packaging for scanning
Nikhil checked the barcode on the medicine bottle before buying it online.
check the barcode on [product] for verification
Each package in the shipment had a barcode that helped warehouse workers track its location.
Takeshi printed a barcode for every item in his shop to speed up checkout.
The library uses barcodes on all its books so the lending system works quickly.
- UPC
UPC stands for Universal Product Code, a specific twelve-digit barcode system used in North America; it is a type of barcode, not a synonym for the general concept.
- QR code
A QR code is a square two-dimensional code that stores more data than a traditional barcode and can be read by smartphone cameras; the two formats look very different.
用法筆記
Barcode is a countable noun. It is frequently used attributively — for example, 'barcode scanner', 'barcode reader', or 'barcode label.' The word is almost always written as one word (not 'bar code') in contemporary English.