involving a great or complete change in English:

She's the designer of a revolutionary new product.

The car was revolutionary for quick travel.

The statue of the Minute Man commemorates the valiant soldiers who fought in the Revolutionary War.

The revolutionary government, while raising troops from the masses and fighting a defensive battle, established a republic and executed Louis XVI.

The most radical revolutionary will become a conservative the day after the revolution.

In a time of universal deceit, telling the truth is a revolutionary act.