"ˌ adjective
Etymology: phot- + refractive
: relating to, caused by, or having an index of refraction that changes relative to the intensity of incident light
"ˌ adjective
Etymology: phot- + refractive
: relating to, caused by, or having an index of refraction that changes relative to the intensity of incident light
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012