Source : Webster's Revised Unabridged Dictionary (1913)

Virtuality \Vir`tu*al"i*ty\, n. [Cf. F. virtualit['e].]
   1. The quality or state of being virtual.

   2. Potentiality; efficacy; potential existence. [Obs.]

            In one grain of corn, there lieth dormant a
            virtuality of many other.             --Sir T.
                                                  Browne.