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Origin and history of substract

substract(v.)

"to subtract" in any sense, 1540s, "Now illiterate" [OED], "An erroneous form of subtract, common in vulgar use" [Century Dictionary], from Modern Latin substractus, past participle of substrahere, an alternative form of subtrahere "take away" (see subtraction). The form probably is suggested by abstract (v.) from Latin abstrahere. Related: Subtracted; subtracting; substrahend.

Entries linking to substract

1540s, "to draw away, withdraw, remove" (transitive), from Latin abstractus or else from abstract (adj.). From 1610s in the philosophical sense "consider as a general object or idea without regard to matter." Related: Abstracted; abstracting.

c. 1400, subtracioun, "withdrawal, removal" (a sense now obsolete), from Late Latin subtractionem (nominative subtractio) "a drawing back, taking away," from past participle stem of Latin subtrahere "take away, draw off, draw from below," from sub "from under" (see sub-) + trahere "to pull, draw" (see tract (n.1)).

The arithmetical sense of "the taking of one quantity or number from another" is attested from early 15c.

Þou most know þat subtraccion is drawynge of one nowmber oute of anoþer nomber. ["The Crafte of Nombrynge," c. 1425]
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