(1) In general, the online world or anything to do with computers and technology. See
virtual,
online and
hyperconnected.
(2) Specifically, a 3D computer environment in which users are represented on screen as avatars of themselves or as made-up characters. In a virtual world, people interact with others in real time. Examples are massively multiuser online games (MMOGs) and virtual worlds such as Second Life and Decentraland. See
metaverse,
virtual reality,
augmented reality,
avatar,
MMOG,
MMORPG,
Second Life and
Decentraland.