This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Of, pertaining to, or exhibiting fibrosis.

Relating to fibrosis.

"This year we've also lost several adults who were waiting for lungs, including one with cystic fibrosis and another with fibrotic lung disease."

fibrous slab    fibrous oak-apple   

fibrotically   

sclerotic    intra-epithelial    lytic    with/without    periodontal    carious    parenchymatous    ulcerative    erythematous    valvular