Origin: 1530–40; < Latin subtractus (past participle of subtrahere to draw away from underneath), equivalent to sub-sub- + trac- (past participle stem of trahere to draw) + -tus past participle suffix
Related forms
sub·tract·er, noun
un·sub·tract·ed, adjective
Synonyms 1, 3.Subtract,deduct express diminution in sum or quantity. To subtract suggests taking a part from a whole or a smaller from a larger: to subtract the tax from one's salary. To deduct is to take away an amount or quantity from an aggregate or total so as to lessen or lower it: to deduct a discount. Subtract is both transitive and intransitive, and has general or figurative uses; deduct is always transitive and usually concrete and practical in application.