Search Result for "transmittance": 
Wordnet 3.0

NOUN (1)

1. the fraction of radiant energy that passes through a substance;
[syn: transmittance, transmission]



The Collaborative International Dictionary of English v.0.48:

Transmittance \Trans*mit"tance\, n.
   Transmission.
   [1913 Webster]


WordNet (r) 3.0 (2006):

transmittance
    n 1: the fraction of radiant energy that passes through a
         substance [syn: transmittance, transmission]