Spectrophotometry is a widely utilized chemical analysis technique that involves measuring the transmission or absorption of light by a sample. Some synonyms for the word spectrophotometry include UV-Visible spectroscopy, photometry, and colorimetry. UV-Visible spectroscopy is a branch of spectrophotometry that involves measuring the absorption of light in the ultraviolet and visible regions to study chemical species. Photometry involves measuring the intensity of light emanating from a sample. Colorimetry is a technique that measures the absorbance of light at specific wavelengths to determine the concentration of a substance. These synonyms can be used interchangeably, and each technique has its unique advantages and limitations in various applications.