the GNU version of the Collaborative International Dictionary of English
ad. In a virtual manner; in efficacy or effect only, and not actually; to all intents and purposes; practically.
The Century Dictionary and Cyclopedia
In a virtual manner; in principle, or in effect, if not in actuality.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. in essence or effect but not in fact
ad. (of actions or states) slightly short of or not quite accomplished; all but
Word Usage
"German steelmaker ThyssenKrupp is creating what it describes as a virtually integrated steel operation, linking workers on three continents by elaborate computer networks and software systems."