The Chinese word "清洁剂" (qīngjié jì), meaning "cleaning agent" or "detergent," is a modern compound noun formed through semantic combination. It consists of the morpheme "清洁" (qīngjié), which itself is a compound verb meaning "to clean" (清 implying "to clear/purify" and 洁 meaning "clean/pure"), and the suffix "剂" (jì), which denotes a chemical agent, substance, or preparation. Therefore, the term is constructed logically as "the agent/substance used for cleaning," where the descriptive action ("清洁") modifies the categorical suffix ("剂") to specify the type of functional product.