• synonyms


[trans-mi-siv-i-tee, tranz-]
noun Physics.
  1. a measure of the ability of a material or medium to transmit electromagnetic energy, as light.
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Compare transmittance.

Origin of transmissivity

First recorded in 1910–15; transmiss(ion) + -ive + -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for transmissivity


  1. physics a measure of the ability of a material to transmit radiation, equal to the internal transmittance of the material under conditions in which the path of the radiation has unit length
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012