Definition of significant figure in English:

significant figure

Syllabification: sig·nif·i·cant fig·ure
(also significant digit)

noun

Mathematics
Each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit: this text will round numbers to three significant figures
More example sentences
  • Although the technique may sound simple in its principles, getting results accurate to 11 significant figures is not a project for a high school science fair.
  • As a result of these simplifications, we cannot expect our dipole strengths to be accurate to better than perhaps two significant figures (although the calculations have been carried out with more).
  • However, his lesson could hardly have been more effective; I don't think that I have ever since quoted the result of a calculation to other than the correct number of significant figures.

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