defining moment

The migration crisis of 2015, when she famously opened Germany’s doors to over a million asylum seekers, was perhaps the defining moment of her time in office.

A straight left jab followed by a short right hand left Miocic with a cut below his right eye midway through the fight, before the defining moment came.

The day Emma Shores was diagnosed with autism has become such a defining moment in her adult life that she celebrates it like a "second birthday".

Everyone in government understands as this source says: “We absolutely know it is the defining moment for the party and our government, this is it.”

The defining moment of the Dodgers’ season went by almost completely unnoticed.