But the definitive moment came Thursday when the government learned that tests had confirmed the virus among chickens and turkeys being raised in private homes.

Out of the Cellar is today widely regarded as the band's best work and a definitive moment in 80s heavy metal.

And yet it's very elusive to try to determine a definitive performance, even a definitive moment, because they change all the time.

Though the scene is the only implication of incest in the film, it came to be the film's definitive moment in contemporary media reviews.

On the morning of June 25, the definitive moment arrived.

The flooding of Old Katonah, which required moving 65 buildings to higher ground, was the definitive moment in the hamlet's history.

Then the definitive moment when all doubt will be shed, South Carolina.

Yet these events were setbacks for the Norse rather than a definitive moment.

This key incident is often considered to mark a definitive moment in the story of Mahabharata.

The definitive moment for us to say what our policy towards Belarus is are next year's local elections.