… Look it up

• here :  PC Magazine Encyclopedia : over 20,000 IT-related terms.   (Browse the index)
• here : FOLDOC (Free On-Line Dictionary Of Computing) – sponsored by Imperial College Department of Computing (mais ne semble plus mis à jour, certaines définitions datent…)
• or here if you’re a beginner : Computeractive Jargon Buster : computing terms explained in plain English.