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substitutive
substrate
substratosphere
substratum
substructure
subsume
subsumption
subtangent
subtenant
subtend
subterfuge
subterminal
subterranean
subtext
subtidal
subtilise
subtilisin
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subtraction

sub·trac·tion [ səb tráksh'n ] (plural sub·trac·tions)


noun 
Definition:
 
1. mathematics deduction of number: the act or process of deducting one number or quantity from another.
Symbol  -


2. removal from something larger: a withdrawal or deduction of something from a larger whole

3. law withdrawal of benefit: the withdrawal or withholding of a benefit

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