What does the prefix cosm mean?

The prefix "cosm" comes from the Greek word "kosmos," which means "order," "universe," or "world."

It is often used in words related to:

* The universe: Cosmology, cosmonaut, cosmic

* Order and harmony: Cosmopolitan, cosmopolite

* The world or society: Cosmic, cosmos

So, when you see "cosm" in a word, it often relates to something vast, encompassing, or orderly.