名詞 callosity:

1. an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)
   同義詞：callus
2. devoid of passion or feeling; hardheartedness
   同義詞：unfeelingness, callousness, hardness, insensibility

cal.los.i.ty

n.（名詞）
【復數(shù)】 cal.los.i.ties
The condition of being calloused.
結(jié)硬塊：被結(jié)硬的這種狀況
Hardheartedness; insensitivity.
硬心腸的：心如鐵石；麻木
See callus
參見 callus

來源：
Middle English callosite
中古英語 callosite
from Old French
源自 古法語
from Late Latin callôsit3s
源自 后期拉丁語 callôsit3s
from Latin callôsus [callous] * see callous
源自 拉丁語 callôsus [結(jié)硬塊的] *參見 callous