Dictionary  car•tridgePronunciation: (kär'trij), [key] —n. 1. Also called cartouche. a cylindrical case of pasteboard, metal, or the like, for holding a complete charge of powder, and often also the bullet or the shot for a rifle, machine gun, or other small arm. 2. a case containing any explosive charge, as for blasting. 3. any small container for powder, liquid, or gas, made for ready insertion into some device or mechanism: an ink cartridge for a pen. 4. Also called magazine. Photog.a lightproof metal or plastic container for a roll of film, usually containing both the supply and take-up spools, as well as a pressure plate, for rapid loading without the necessity of threading the film. 5. Audio.pickup (def. 8). 6. a flat, compact container enclosing an endless loop of audiotape, operated by inserting into a slot in a player. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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