单词	significant digit
释义	significant digit noun : any of the digits of a number beginning with the digit farthest to the left that is not zero and ending with the last digit farthest to the right that is either not zero or that is a zero but is considered to be exact called also significant figure Example Sentences Recent Examples on the Web How many significant digits of these numbers can be trusted? Quanta Magazine, 26 Oct. 2016 Word History First Known Use 1923, in the meaning defined above
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