The Chinese word **微粒** (wēilì) is a compound noun formed through the common morphological process of combining two meaningful characters (morphemes): **微** (wēi), meaning "tiny," "minute," or "microscopic," and **粒** (lì), meaning "grain," "particle," or "granule." The first character **微** acts as a modifier describing the scale, while the second character **粒** serves as the core noun specifying the object's nature. Together, they create a precise and logical semantic unit meaning "a tiny particle" or "speck," widely used in scientific and everyday contexts to refer to microscopic matter like dust, pollutants, or subatomic particles.