adamantine
🇺🇸
/ˌædəˈmæntaɪn/
🇬🇧
/ˌædəˈmæntaɪn/
extremely hard and durable
The dragon's scales were adamantine, resisting all attempts to pierce them.
龙的鳞片是坚硬的,抵挡住了所有刺穿它们的尝试。