Definitions for AREA CODE
Random House Webster's College Dictionary
a three-digit code that identifies one of the telephone areas into which the U.S. and certain other countries are divided, used when dialing a call between areas.
Category: Telegraphy and Telephony
Origin of area code:
a number usually of 3 digits assigned to a telephone area as in the United States and Canada
Kernerman English Learner's Dictionary
area code(noun)ˈɛər i ə
telephone numbers for a particular U.S. or Canadian region
A prefix appended to a telephone number indicating the geographical area.