Lewis & Short

subductĭo, ōnis, f. [subduco, I.].

  1. I. (Acc. to subduco, I. B. 1.) Naut. t. t., a hauling ashore of a ship: ad celeritatem onerandi subductionesque paulo facit humiliores (naves), * Caes. B. G. 5, 1: navium, Vitr. 10, 2, 10.
  2. * II. (Acc. to subduco, II. B.) A reckoning, Cic. Or. 2, 30, 132.