Definition of subtraction in English:


Line breaks: sub|trac¦tion
Pronunciation: /səbˈtrakʃn


[mass noun]
  • 1The process or skill of taking one number or amount away from another: subtraction of this figure from the total
    More example sentences
    • Roman numerals are fine for recording numbers, and for doing simple additions and subtractions, which meant they were adequate, if somewhat cumbersome, for commerce and trade.
    • They were all excited doing their addition, subtractions, multiplications and divisions, mentally and with abacus.
    • Apart from additions and subtractions, they also multiply, divide, calculate square roots, etc, all in a matter of seconds.
  • 1.1 Mathematics The process of taking a matrix, vector, or other quantity away from another under specific rules to obtain the difference.
    More example sentences
    • If the spectra are dominated by fluctuation of the motor charges, subtraction of two spectra obtained at different pipette potentials should have a similar relaxation time.
    • ‘The Analytical Method of vector addition and subtraction uses vector components,’ I reminded Mr. Shah.
    • The processing can be extremely fast, requiring only the time to record a patch from a camera and then carry out the subtraction and a single matrix multiplication.

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