All 4 Uses

virtual
in
School's Out - Forever
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Gliders are virtually soundless.
Chpt 91-100 *

virtually = to almost be so, but not so strictly speaking
Those two kids fell on the hot dogs and virtually shoved them whole into their mouths.†
Chpt 101-110
It was a huge multinational, multifaceted conglomerate that had its fingers in virtually every type of business there was, including food, medicine, real estate, computer technology, manufacturing, and even book publishing — so heads up, whoever's reading this.†
Chpt 101-110
A fine time for the big guys' latest super-top-secret holographic virtual-reality system to crash.†
Chpt 131-142 *

Definitions:

(1) (virtual as in: virtual organization)
to almost be something; or to effectively be something without entirely being it in a traditional sense
(2) (virtual as in: computer's virtual world)
something simulated by a computer
(3) (meaning too rare to warrant focus)