sub·stract \səbzˈtrakt, -bˈst-\verb (-ed/-ing/-s) Etymology: Late Latin substractus, past participle of substrahere to draw from beneath, withdraw, alteration (influenced by Latin subs-, variant of sub-) of Latin subtrahere — more at subtract : subtract < so far from adding to, it will substract from, the quantity of labor necessary — Jeremy Bentham >