alopecia
/ˌæləˈpiːʃɪə/noun
mass noun
- Medicine the partial or complete absence of hair from areas of the body where it normally grows; baldness【医】脱发（症）, 秃发（症）。
词源
late Middle English: via Latin from Greek alōpekia, literally 'fox mange'， from alōpēx 'fox'.