Definitions

1. adjective

more coarse or rough in texture, or having a coarser or more uneven grain.

“The gristlier texture of this oatmeal made it harder to swallow.”

2. comparative

more coarse or rough in texture, or having a coarser or more uneven grain, than.

“This oatmeal is gristlier than the one we had for breakfast yesterday.”

3. superlative

the coarsest or roughest in texture, or having the coarsest or most uneven grain.

“This is the gristliest oatmeal I have ever eaten.”