A bluish white metallic element (Al; at. no. 13; at. wt. 26.98153) noted for its lightness, the most plentiful of all metallic substances, but never found in a pure state.

【化】铝(元素符号 Al；原子序 13；原子量 26.98153)。在自然界中皆以化合物的形式存在。