| cosmo- or (before a vowel) cosm- | |
| —combining form | |
| indicating the world or universe: cosmology; cosmonaut; cosmography | |
| [from Greek: | |
| cosm- or (before a vowel) cosm- | |
| —combining form | |
| [from Greek: | |
| a gadget; dingus; thingumbob. |
| a fool or simpleton; ninny. |