'virtually precluded' is correct and usable in written English.
It is an adjective used to mean "not allowing an action to occur", or "almost impossible". For example, "The new legislation virtually precluded any progress on the project."
Further expansion of fiscal policy is virtually precluded by the size of the budget deficit, now 12% of GDP, and the sharp increase of the debt/GDP ratio.
The analysis of natural recruitment patterns showed that recovery of canopies was virtually precluded in unstable rocky habitats, due to severe damage and mortality from boulder displacement and overturning during severe storms.
That outcome, Dr. Nissen wrote, "virtually precludes the possibility of an overall benefit and suggest an unexpected mechanism for harm".
The waver's net weekly salary of about $265 virtually precludes him from shopping at the Americana and its stores, like Prada, Hermes, Gucci and Burberry.
This, in turn, virtually precludes entree to the racks at Wal-Mart or Blockbuster, outlets without which a film's post-theatrical existence will be one of obscurity.
In a footnote to her introduction, Herman acknowledges the psychiatric profession's "ignominious history" of misogyny and homophobia, but this is misleading: the problem wasn't so much that psychiatrists were homophobic but that homosexuality fell so far outside the social norm as to virtually preclude the possibility of a happy, healthy life.
A robust technology for the creation of bispecific IgG has recently been developed that virtually precludes IgG contaminants, as reviewed here.
Finally, complex industries with large masses of proprietary data are also able to control the flow of information to regulators -- information that will form the basis of regulation and enforcement, thereby virtually precluding effective regulation.
Ring, however, managed to reinforce the ethnic divide between Armenians and Azerbaijanis, "virtually precluding, according to Michael Croissant "the possibility of further coexistence between the peoples within" Azerbaijan's borders.
Finally, ethical considerations virtually preclude experimental human data from the environmental health evidence stream.
This delayed mode of action virtually precludes performing a meaningful dose-finding study.
