Dictionary

transmittance

noun trans·mit·tance \-ˈmi-tən(t)s\

Definition of TRANSMITTANCE

2
:  the fraction of radiant energy that having entered a layer of absorbing matter reaches its farther boundary

First Known Use of TRANSMITTANCE

circa 1855

transmittance

noun trans·mit·tance \-ˈmit-ən(t)s\   (Medical Dictionary)

Medical Definition of TRANSMITTANCE

2
:  the fraction of radiant energy that having entered a layer of absorbing matter reaches its farther boundary

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