Longman Dictionary of Contemporary English homepage

Date: 1400-1500
Language: Latin
Origin: deductus, past participle of deducere; DEDUCE

deduct

 verb
     
de‧duct [transitive]
to take away an amount or part from a total [= subtract]
deduct something from something
The payments will be deducted from your salary.
—deductible adjective:
Interest charges are tax deductible.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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