The scientific study of measurement, including units, standards, and instruments. Used in academic and technical contexts.
計量学は、正確な測定のための理論と技術を扱う学問です。
Metrology is the discipline that deals with the theory and techniques for accurate measurement.
Compound of 計量 (measurement) and 学 (study, -ology). The exact historical derivation is uncertain, but the term follows the standard pattern for naming academic disciplines in Japanese.