The bomb is set to go off at a certain time of the day.

"I wonder how he knew we'd all be in here when the bomb was set to go off."

Because her little time bomb was set inside my shields.

He was a bomb set to go off at the sight of a badge.

The shooting took place the day after four more bombs were set but failed to go off in London.

A second bomb was set nearby and timed to go off later.

"The bomb is not set to detonate for another seven hours."

"You mean that the bomb was set for six o'clock?"

"But the bomb has already been set," Joe said in alarm.

"And the bomb was set in place while no one was looking. "