subtraction
US /səbˈtræk.ʃən/
UK /səbˈtræk.ʃən/
1.
the process or skill of taking one number or amount away from another
:
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He struggled with subtraction problems in math class.
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Basic arithmetic includes addition, subtraction, multiplication, and division.
2.
the removal of something
:
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The subtraction of certain features made the new model less appealing.
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The architect proposed the subtraction of a wall to create more open space.