Diphtheria is a highly contagious and potentially life-threatening bacterial disease caused by Corynebacterium diphtheriae. There are two types of diphtheria: respiratory and cutaneous. Respiratory diphtheria involves the nose, throat and tonsils, and cutaneous diphtheria involves the skin.
cell address. (computer science). A combination of a letter and a number that specifies the column and row in which a cell is located on a spreadsheet. 1  Facebook. 2  Twitter.
A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. Everything attached to a â¦ ny computer network has a permanent MAC address that moves with the hardware no matter where it is connected.