The rarified air at the top of the mountain made it difficult to breathe.

The air rarified as we climbed higher into the mountains.

The artist is rarifying the air in the room with his unique sculptures.

The process of distillation rarifies the liquid.

The artist used a special technique to rarify the paint.

The rarifier is used to decrease the density of a gas.

The rarifiers in the room were discussing the latest advancements in technology.