The catalytic event occurred in the spring of 1967 when Muhammad Ali refused, on religious grounds, to be drafted.

After this point, the catalytic event should proceed without particular obstacles.

Conditions are tense with agitators and bolsheviks planning a strike prior to the catalytic event.

The fourth-grade test turned out to be a catalytic event for New York.

The catalytic event I told you about won't necessarily be purposeful.

But for other trustees, the blowup last month over Hostos Community College was a catalytic event.

America at that time was going through a catalytic event, and whenever there's a big social movement it produces great music, as in the 1960's.

It was also a catalytic event.

After various catalytic events, he endeavored to create a universe in competition with (and presumably against the wishes of) his father, Yahweh.

"The town now has a catalytic event, it's an important threshold."