"to subtract," 1540s, "now illiterate" [OED], "An erroneous form of subtract, common in vulgar use" [Century Dictionary], from Modern Latin substractus, past participle of substrahere, alternative form of subtrahere (see subtraction). Related: Subtracted; subtracting.
substantiation
substantive
substation
substitute
substitution
substract
substrate
substratum
substructure
subsume
subtend
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