Magnitude
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 05:42的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=magnitude+etymology&newwindow=1&hl=en ref] late Middle English (also in the sense ‘grea…”的新页面）
late Middle English (also in the sense ‘greatness of character’): from Latin magnitudo, from magnus ‘great’.
wiktionary
From Latin magnitūdō(“greatness, size”), magnus + -tūdō.
etymonline
magnitude (n.)
c. 1400, "pre-eminence, magnificence;" early 15c., "greatness of size or extent," from Latin magnitudo "greatness, bulk, size," from magnus "great" (from suffixed form of PIE root *meg- "great") + -tudo, suffix forming abstract nouns from adjectives and participles (see -tude).
Meaning "size, extent," whether great or small is from early 15c. Of stars, "brightness or brilliancy expressed as a number" (now on a logarithmic scale) from 1640s, translating Ptolemy's Greek megethos.
