VIRTUAL

In effect or essence, if not in fact or reality; imitated, simulated.

Example: "In fact a defeat on the battlefield, tet was a virtual victory for the north, owing to its effect on public opinion."

Having the power of acting or of invisible efficacy without the agency of the material or measurable part; potential.

Nearly, almost. (a relatively recent development in meaning)

Example: "The angry peasants were a virtual army as they attacked the castle."

Simulated in a computer or online.

Example: "The virtual world of his computer game allowed character interaction."

Operating by computer or in cyberspace; not physically present.

Example: "A virtual assistant; a virtual personal trainer"

(of a class member) capable of being overridden with a different implementation in a subclass.

Pertaining to particles in temporary existence due to the heisenberg uncertainty principle.