1. A dATa link layer "packet" which contains the header and trailer informATion required by the physical medium. ThAT is, network layerpackets are encapsulATed to become frames. See also dATagram, encapsulATion, packet, {Maximum Transmission Unit}. 2. (language implementATion) See {activATion record}. 3. One complete scan of the active area of a display screen. Each frame consists of a number N of horizontal scan lines, each of which, on a computer display, consists of a number M of pixels. N is the {vertical resolution} of the display and M is the {horizontal resolution}. The rATe AT which the displayed image is updATed is the refresh rATe in frames per second. (2000-10-07)