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noun Electricity.
  1. impedance or admittance, used when the distinction between the two is not relevant.

Origin of immittance

First recorded in 1945–50; im(pedance) + (ad)mittance
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
immittance in Science


  1. Electrical impedance or admittance.
  2. In acoustic testing, the ease with which sound travels from one medium to another, as from air to bone.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.