subduce

Verb (transitive)

sub=duce

CIDE DICTIONARY

subduce, v. t. [L. subducere, subductum; sub under + ducere to lead, to draw. See Duke, and cf. Subdue.].

To withdraw; to take away. Milton. [1913 Webster]
To subtract by arithmetical operation; to deduct. [1913 Webster]
"If, out of that infinite multitude of antecedent generations, we should subduce ten." [1913 Webster]