[trans-kuh n-duhk-tuh ns]
noun Electronics.
  1. the ratio of a small change in anode current of an electron tube at a certain level of output to the corresponding small change of control-electrode voltage, usually expressed in mhos or micromhos.
  2. (loosely) the amplification factor of a tube divided by its anode resistance.

Origin of transconductance Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018