According to this simple sequential model, the market was the source of new ideas for directing R&D,which had a reactive role in the process.

The board, he added, has to take a "proactive role and not a reactive role."

Meanwhile, 911 locks patrol officers into a reactive role.

That confines the patrol force to a reactive role.

Mr. Fox is much better delivering funny lines than he is in this largely reactive role, but he is the sympathetic figure that the material needs.

It's part of his style to keep the free world in the so-called reactive role.

But it's largely a reactive role.

Computerisation allows doctors to expand their largely reactive role of sitting in the surgery waiting for ill patients to come to them.

Johnson settled into a reactive, secondary role, while Bradshaw displayed a glaring need for guidance.

For the about the next 150 years, the federal government took a reactive role in emergency response until passing the Federal Civil Defense Act of 1950.