terminal /tur′minəl/ [L, terminus, boundary] , 1. (of a structure or process) near or approaching its end, such as a terminal bronchiole or a terminal disease. 2. an input/output (I/O) device that has two-way communication capability with a computer. A terminal usually has a keyboard and a cathode-ray or video display screen, or a text printing facility. −terminus, n., −terminate, v.
