What is another word for index of refraction?
Pronunciation: [ˈɪndɛks ɒv ɹɪfɹˈakʃən] (IPA) 
The index of refraction is a property of a material that describes how much it slows down the speed of light. This property is often used in optics and physics to determine the behavior of light as it passes through different mediums. However, there are several other words that can be used to describe the same concept. For example, refractive index, optical index, and index of optical refraction are all synonyms for the index of refraction. Each of these terms can be used interchangeably to describe the same optical property of a material. Regardless of the term used, the index of refraction is an essential concept in understanding the behavior of light in different mediums.
