(fml 文) (usu large) size （通常指大的）量, 大小: The magnitude of the epidemic was frightening. 这种流行病传播范围之广令人惊惶不安. 
(degree of) importance 重要; 重要性; 重要程度: You don't appreciate the magnitude of her achievement. 你没有认识到她这一成就的重大意义. * a discovery of the first magnitude, ie a most important discovery 一项极重要的发现. 
(astronomy 天) degree of brightness of a star 星等（表示星体亮度的等级）: a star of the first, second, etc magnitude 一等星﹑ 二等星.