LATIN DICTIONARYLexicon Latīnum
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“subtract” in Latin

The English word subtract itself goes back to Latin sub, through subtractus.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

subtract
To take away, subtrahere: detrahere: deducere: adimere: auferre.
(In computation) (In computation) to deduct, deducere (☞ not subtrahere or detrahere in this sense).

Quick answer

What is the Latin word for subtract?
The usual Latin words for “subtract” are subtrahō, dētrahō, dēdūcō; also adimō, auferō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.