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arithmetic

a·rith·me·tic [ ə ríthmə tìk ]


noun 
Definition:
 
1. basic math: the branch of mathematics that deals with addition, subtraction, multiplication, and division

2. calculation: one or more calculations using basic mathematics

3. use of numbers: the use of numbers in calculation, or educational exercises involving this

4. ability to do arithmetic: somebody's ability to add, subtract, multiply, and divide ( informal )



adjective 
Definition:
 
relating to arithmetic: relating to, using, or based on arithmetic

[13th century. Via Old French arismetique< Greek arithmētikē (tekhnē) "counting (art)" < arithmein "reckon" < arithmos "number"]

ar·ith·met·i·cal [ àrrith méttik'l ] adjective
ar·ith·met·i·cal·ly adverb
a·rith·me·ti·cian [ ə rìthmə tísh'n ] noun
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