1. See network interface card.
2. Acronym for network information center. An organization that provides information about a network and other support to users of the network. The principal NIC for the Internet is InterNIC. Intranets and other private networks may have their own NICs. See also InterNIC.
(Network Information Center):
Generally, any office that handles information for a network. The most famous of these on the Internet was the InterNIC, which was where most new domain names were registered until that process was decentralized to a number of private companies.
An organization which provides network users with information about services provided by the network.