) | a combining form meaning “earliest, original,” used in words denoting the primal stage of a historical or cultural entity or phenomenon: ur-civilization; urtext. |

| a combining form meaning “urine,” used in the formation of compound words: urology. |
| a combining form meaning “tail,” used in the formation of compound words: uropod. |
| ur- 1 pref. Variant of uro-1. |
| ur- 2 pref. Variant of uro-2. |
| ur- 3 pref. Original; prototypical: ur-feminist; ur-language. [From German ur-, original; see Ursprache.] |
| uro- 1 or ur- pref.
[New Latin ūro-, from Greek ouro-, from ouron, urine.] |
| uro- 2 or ur- pref. Tail: urochord. [New Latin ūro-, from Greek ouro-, from ourā; see ors- in Indo-European roots.] |
ur- pref.
Variant of uro-1.
uro- or ur-
pref.
Urine: uric.
Urinary tract: urology.