MAC Address

Uniquely identifying hardware serial number, details ...
Found on http://www.cryer.co.uk/glossary/m/index.htm

MAC address

Media Access Control address is a unique numeric identifier assigned to each device connected to an Ethernet network. It is used for data transmission and security functions.
Found on http://www.youngco.com/young2.asp?ID=4&Type=3

MAC address

A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used for numerous network technologies and most IEEE 802 network technologies, including Ethernet. Logically, MAC addresses are used in the Media Access Control protocol sub-layer
Found on http://en.wikipedia.org/wiki/MAC_address

MAC Address

The hardware address of a device connected to a network. In Ethernet, the Ethernet address.
Found on http://www.nacs.uci.edu/network/network-glossary.html
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