There are 9 13-letter words that start with 'oc'.
| occidentalize | oceanographer |
| oceanographic | oceanologists |
| ochlocratical | octodecillion |
| octogenarians | octosyllabics |
| octosyllables | |
Note: These 9 13-letter words that start with 'oc' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with oct, occ, oce, och, ocu, oca, ocr, oci, ock, oco.
3-letter words start with 'oc' (1)