aureole
/ˈɔːrɪəʊl/(亦作 aureola /ɔːˈrɪəʊlə/)
noun
1- a circle of light or brightness surrounding something, especially as depicted in art around the head or body of a person represented as holy（尤指艺术作品中圣者头上或环绕身体的）光环; 光轮。
1.3
- Geology the zone of metamorphosed rock surrounding an igneous intrusion【地质】（岩浆侵入处周围的）接触（变质）晕。
词源
Middle English: from Old French aureole, from Latin aureola （corona） 'golden (crown)'， feminine of aureolus （diminutive of aureus, from aurum 'gold'）.