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The mathematics of integers, rational numbers, real numbers, or complex numbers under addition, subtraction, multiplication, and division.
(noun)
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Archaic A book on this kind of mathematics.
(noun)
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Of or relating to arithmetic.
(adjective)
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Changing according to an arithmetic progression: The increase in the food supply is arithmetic.
(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.