Meaning of virtual

vir•tu•al

Pronunciation: (vûr'ch-ul), [key]
— adj.
  1. being such in power, force, or effect, though not actually or expressly such: a virtual dependence on charity.
    1. noting an image formed by the apparent convergence of rays geometrically, but not actually, prolonged, as the image formed by a mirror (opposed to real).
    2. noting a focus of a system forming virtual images.
  2. temporarily simulated or extended by computer software: a virtual disk in RAM; virtual memory on a hard disk.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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