magnitude

英 ['mægnɪtjuːd] 美['mæɡnɪtud]

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复数: magnitudes;

magnitude 巨大，重要性，地震震级等

magni-,巨大的，-tude,名词后缀。即巨大之物，同时用于地震震级等多种科学术语。

magnitude: magnitude: [14] Magnitude is one of a large family of words for which English is indebted to Latin magnus ‘large’. This goes back to an Indo- European *meg- or *megh-, source also of Greek mégas ‘large’ (from which English gets the prefix mega-) and prehistoric Germanic *mikil-, ancestor of English much. Apart from magnitude, English descendants of magnus include magnanimous [16] (etymologically ‘large-minded’), magnate [15] (a ‘large’ or ‘important’ person), magnificat [12] (from the first words of Luke 1:46, Magnificat anima mea dominum ‘My soul doth magnify the lord’, where magnificat is the 3rd person present singular of Latin magnificāre, a derivative of magnus and source of English magnify [14]), magnificent [16] (etymologically ‘doing great deeds’), and magnum [18] (the application to a double-sized wine bottle is a modern one).

In addition maxim and maximum come from the superlative of magnus and major and mayor from its comparative, and master and the monthname May could also be related.
=> magnum, major, maxim, mayor, much
magnitude (n.): c. 1400, "greatness of size or character," from Latin magnitudo "greatness, bulk, size," from magnus "great" (see magnate) + -tudo, suffix forming abstract nouns from adjectives and participles (see -tude). Meaning "size, extent" is from early 15c. Of stars, "brightness," from 1640s.

1. The time delay would be smaller by eight orders of magnitude.: 如果按8个数量级来看，延时量会显得小一些。

2. The San Francisco earthquake of 1906 had a magnitude of 8.3.: 1906年旧金山地震的震级为8.3级。

3. Ministers underestimated the magnitude of the task confronting them.: 部长们低估了他们所面临的任务的艰巨性。