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单词 vinculum
释义

WordReference Random House Unabridged Dictionary of American English © 2024
vin•cu•lum  (ving′kyə ləm),USA pronunciation n., pl. -la (-lə).USA pronunciation 
  1. a bond signifying union or unity;
    tie.
  2. Mathematicsa stroke or brace drawn over a quantity consisting of several members or terms, as a+b, in order to show that they are to be considered together.
  • Latin: fetter, equivalent. to vinc(īre) to bind + -ulum -ule
  • 1655–65

Collins Concise English Dictionary © HarperCollins Publishers::
vinculum /ˈvɪŋkjʊləm/ n ( pl -la / -lə/)
  1. a horizontal line drawn above a group of mathematical terms, used as an alternative to parentheses in mathematical expressions, as in x + ???y – z which is equivalent to x + (y – z)
  2. any bandlike structure, esp one uniting two or more parts
Etymology: 17th Century: from Latin: bond, from vincīre to bind
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