pen·e·tra·lia /ˌpenɪˈtreɪlɪə/[复]([单] pen·e·tra·li·um /ˌpenɪˈtreɪlɪəm/) n. 1. (建筑物)最里面的处所,最深处(尤指庙宇内殿、 宫中密室等) 2. 隐秘的深处 the penetralia of one's heart 心灵深处 3. 隐私;隐秘 be admitted to the inmost penetralia of affairs 被允许参与最机密的事务 [L < penetrālis inner < penetrāre to penetrate]