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)