There are 8 13-letter words that start with 'art'.
| arteriography | arteriovenous |
| arthritically | arthropathies |
| arthroscopies | articulations |
| artificiality | artlessnesses |
Note: These 8 13-letter words that start with 'art' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with arti, arth, arte, arts, artf, artl, artw, arta, arty.
4-letter words start with 'art' (2)