There are 13 words that start with 'calcif'.
| calcify | calcific |
| calcified | calcifies |
| calcifuge | calciferol |
| calcifuges | calcifying |
| calciferols | calciferous |
| calcifugous | calcification |
| calcifications | |
Note: These 13 words that start with 'calcif' are found from the USA & Canada version of the tournament Scrabble word list.