The class of compounds containing such rings are also referred to as furans.

In Australia, this class is generally referred to as being small-medium sized cars.

This class of ship is sometimes referred to as the Leviathan-class.

The class is also sometimes referred to as the Asakaze class.

This class of ships is sometimes referred to as the Formidable class.

This class are also referred to as "large China gunboats".

This class of writers, poets and intellectuals is often referred to as Ilustrados.

This class of chemicals is sometimes referred to collectively as the "amphetamine family".

Prior to 1886, classes were referred to by the number applied to the first built locomotive within that class.

Such a class can be referred to as a healer.