1. Abbreviation for "I seek You". 2. A proprietarYchat sYstem created bY a couple of israeli guYs, who later founded "mirabilis". ICQ was sold to {America On-Line} around 1998. The name "ICQ" is a plaY on "cq", the radio signal for seeking conversation. Start . [Confirm derivation? TCP? SummarY?] (2000-04-03)