Search Result for "refractivity": 
Wordnet 3.0

NOUN (1)

1. the physical property of a medium as determined by its index of refraction;
[syn: refractivity, refractiveness]


WordNet (r) 3.0 (2006):

refractivity n 1: the physical property of a medium as determined by its index of refraction [syn: refractivity, refractiveness]