magnitude

n. 巨大, 重大, 重要, 大小, 数量, 星等(指星的亮度)
【计】 大小; 值

mag.ni.tude

n.Abbr. mag.（名词）缩写 mag.


Greatness of rank or position:
崇高：职务或者地位的重要：
例句：
.such duties as were expected of a landowner of his magnitude.(Anthony Powell)
.应该由地位崇高的地主来担负的责任.(安东尼·鲍威尔)

Greatness in size or extent:
巨大：尺寸或程度上的大：
例句：
The magnitude of the flood was impossible to comprehend.
这场水灾的危害性是无法了解的

Greatness in significance or influence:
重大：意义或者影响上的重大：
例句：
was shocked by the magnitude of the crisis.
被这场危机的严重程度震惊了

Astronomy The degree of brightness of a celestial body designated on a numerical scale, on which the brightest star has magnitude -.4 and the faintest visible star has magnitude ', with the scale rule such that a decrease of one unit represents an increase in apparent brightness by a factor of 2.52.Also called apparent magnitude
【天文学】 星的亮度：用数字化尺度表示出来的一个天体的亮度，最亮的星的星等为-.4；最昏暗的星等为'，在这种度量的规则下，星等减小一个单位表示外观亮度增强2.52倍也作 apparent magnitude
Mathematics
【数学】
A number assigned to a quantity so that it may be compared with other quantities.
量值：用来表示数量多少的一个数字，以便和其他数量作比较
A property that can be quantitatively described, such as the volume of a sphere or the length of a vector.
可量化的值：可以用数字形式描述出来的特性，例如球体的面积或者向量的长度
Geology A measure of the amount of energy released by an earthquake, as indicated on the Richter Scale.
【地质学】 震级：衡量地震释放出能量大小的单位，例如按里氏标准表示出来的级别

来源：
Middle English
中古英语
from Old French [size]
源自 古法语 [尺寸]
from Latin magnitôdô [greatness, size]
源自 拉丁语 magnitôdô [大；大小]
from magnus [great] * see meg-
源自 magnus [大的] *参见 meg-