Definition of "virtually"

virtually

/ˈvɝt͡ʃuəli/

adverb
comparative more virtually, superlative most virtually
1. Almost but not quite.
  Quotations
  By surviving the first six minutes Hargreaves matched the total amount of playing time he had managed previously in virtually three years - and by scoring his first goal since April 2008 he set the hosts on their way to a fifth win of the season in all competitions.
  2011 September 21, Sam Lyon, “Man City 2-0 Birmingham”, in BBC Sport
  Investors face a quandary. Cash offers a return of virtually zero in many developed countries; government-bond yields may have risen in recent weeks but they are still unattractive. Equities have suffered two big bear markets since 2000 and are wobbling again. It is hardly surprising that pension funds, insurers and endowments are searching for new sources of return.
  2013 July 6, “The rise of smart beta”, in The Economist, volume 408, number 8843, page 68
2. Without exaggeration.
3. In essence or functionally, but not in fact, formally, or technically.
4. (algebra) Of a substructure of finite index.
5. (topology) Of a covering space of finite index.
6. By computer or in cyberspace.