There are 12 12-letter words that start with 'ur'.
| urbanisation | urbanization | urbanologies |
| urbanologist | urediospores | urethritises |
| urethroscope | uricotelisms | urinogenital |
| urochordates | urolithiases | urolithiasis |
Note: These 12 12-letter words that start with 'ur' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with ure, ura, uro, urb, uri, urt, urg, urs, urp, uru, urc, urn, urd.
3-letter words start with 'ur' (4)