Emily Dickinson Lexicon

SUB-DUCE, or SUB-DUCT', v.t. [L. subduco; sub and duco, to draw.]

1. To withdraw; to take away. Or from my side subducting, took perhaps / More than enough. – Milton.
2. To subtract by arithmetical operation. If out of that infinite multitude of antecedent generations we should subduct ten. – Hale.