rickets
/ˈrɪkɪts/noun
mass noun［treated as sing. or pl.］
- Medicine a disease of children caused by vitamin D deficiency, characterized by imperfect calcification, softening, and distortion of the bones typically resulting in bow legs【医】佝偻病。
词源
mid 17th cent.: perhaps an alteration of Greek rhakhitis （see RACHITIS）.