| var. of cosmo- before a vowel: cosmism. |
| a combining form meaning “world,” “universe,” used in the formation of compound words: cosmography; in contemporary usage, sometimes representing Russian kosmo-, it may mean “outer space,” “space travel,” or “cosmic ray”: cosmonaut. |
| cosm- pref. Variant of cosmo-. |
| cosmo- or cosm- pref. Universe; world: cosmology. [From Greek kosmos, order, universe.] |
