Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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area code a set of three numbers given to different areas of the United States and Canada for telephone service. An area code must be dialed before the telephone number when calling someone outside a local area.
bar code a set of black bars on a white background printed on the labels of goods and mail. A bar code is scanned by a computer that reads information such as price.
dialing code the British word for the set of digits at the beginning of a telephone number that represents a telephone district. Dialing code has a meaning similar to area code.
Zip Code (Trademark) Zip Code is a U.S. Postal Service system that uses a code of five or more numbers to identify every postal delivery area in the United States. Zip stands for "Zone Improvement Plan."