He made a rational decision based on the facts.

Rationality is the key to making logical decisions.

Rationalism is the belief that reason is the primary source of knowledge and truth.

The company implemented a rationalization plan to streamline its operations.

He tried to rationalize his behavior by saying he was just tired.

He is a rationalizer who always looks for ways to streamline processes.

The soldiers were given a daily ration of food.

The government rationed meat during the war.

A rational number is a number that can be expressed as a fraction.

During World War II, people in the United Kingdom had to use a ration book to purchase limited amounts of food.