osteoma

名词 osteoma:

1. a slow growing benign tumor of consisting of bone tissue; usually on the skull or mandible

os.te.o.ma

n.（名词）
【复数】 os.te.o.mas 或 os.te.o.ma.ta [-m…-t…]
A benign tumor composed of bony tissue, often developing on the skull.
骨瘤：由多骨组织构成的良性肿瘤，常长于头骨上