There are 12 words that end with 'ccus'.
| coccus | floccus |
| gonococcus | diplococcus |
| micrococcus | cryptococcus |
| echinococcus | enterococcus |
| pneumococcus | meningococcus |
| streptococcus | staphylococcus |
Note: These 12 words that end with 'ccus' are found from the USA & Canada version of the tournament Scrabble word list.