  We propose the term and concept XV (eXtended meta/omni/uni/Verse) as an
alternative to, and generalization of, the shared/social virtual reality widely
known as ``metaverse''. XV is shared/social XR. We, and many others, use XR
(eXtended Reality) as a broad umbrella term and concept to encompass all the
other realities, where X is an ``anything'' variable, like in mathematics, to
denote any reality, X $\in$ \{physical, virtual, augmented, \ldots \} reality.
Therefore XV inherits this generality from XR. We begin with a very simple
organized taxonomy of all these realities in terms of two simple building
blocks: (1) physical reality (PR) as made of ``atoms'', and (2) virtual reality
(VR) as made of ``bits''. Next we introduce XV as combining all these realities
with extended society as a three-dimensional space and taxonomy of (1)
``atoms'' (physical reality), (2) ``bits'' (virtuality), and (3) ``genes''
(sociality). Thus those working in the liminal space between Virtual Reality
(VR), Augmented Reality (AR), metaverse, and their various extensions, can
describe their work and research as existing in the new field of XV. XV
includes the metaverse along with extensions of reality itself like shared
seeing in the infrared, ultraviolet, and shared seeing of electromagnetic radio
waves, sound waves, and electric currents in motors. For example, workers in a
mechanical room can look at a pump and see a superimposed time-varying waveform
of the actual rotating magnetic field inside its motor, in real time, while
sharing this vision across multiple sites.
  Presented at IEEE Standards Association, Behind and Beyond the Metaverse: XV
(eXtended meta/uni/Verse), Thurs. Dec. 8, 2022, 2:15-3:30pm, EST.
