Refractometries is a technical term that refers to the measurement of the refractive index of a substance. This process is commonly used in various scientific fields such as chemistry, physics, and biology. There are various synonyms that can be used in place of refractometries including refractometry, refractive index measurement, and refractive index determination. Refractometry is the most commonly used synonym for refractometries as it accurately describes the process of measuring the refractive index of a substance. Refractive index measurement and determination are also used interchangeably with refractometries to describe the same process of determining the refractive index of a substance.