Subduce \Sub*duce"\, Subduct \Sub*duct"\, v. t. [L. subducere, subductum; sub under + ducere to lead, to draw. See {Duke}, and cf. {Subdue}.] 1. To withdraw; to take away. --Milton. [1913 Webster] 2. To subtract by arithmetical operation; to deduct. [1913 Webster] If, out of that infinite multitude of antecedent generations, we should subduce ten. --Sir M. Hale. [1913 Webster]