refractivity

[ ree-frak-tiv-i-tee ]

noun

1. the power to refract.

Word History and Origins

Origin of refractivity¹

refractive + -ity

Example Sentences

In this case small temperature changes alter the refractivity of the liquid without appreciably affecting the quartz.

From Project Gutenberg

In air and other gases, at ordinary pressures, the dispersion is very small, because the refractivity is small.

From Project Gutenberg

Glasses can now be made differing considerably both in refractivity and dispersive power.

From Project Gutenberg