fluorometry

This term is a specialized technical noun used almost exclusively within the fields of analytical chemistry, biochemistry, and molecular biology. It describes the specific methodology of quantifying fluorescence, distinguishing it from fluorimetry, although the two are often used interchangeably in scientific literature.

As a field of study or a technical process, the word is treated as an uncountable mass noun. It refers to the abstract concept of the measurement process rather than a discrete object or a single instance of measurement.