refractivity
ref·rac·ti·vity
noun
1.
the physical property of a medium as determined by its index of refraction
Origin
From refractive + -ity.
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.