Wordnet 3.0
NOUN (1)
1.
fibrosis of the bone marrow;
The Collaborative International Dictionary of English v.0.48:
myelofibrosis \myelofibrosis\ n. (Med.)
Fibrosis of the bone marrow.
[WordNet 1.5]
WordNet (r) 3.0 (2006):
myelofibrosis
n 1: fibrosis of the bone marrow