The Chinese word 岁数 (suìshu) is a compound noun formed through the common morphological process of combining two meaningful characters (morphemes) to create a new, more specific term. The first character, 岁 (suì), originally referred to the "Jupiter cycle" in ancient astronomy but evolved to mean "year (of age)". The second character, 数 (shù), means "number" or "figure". When combined, they create a literal meaning of "number of years", which directly and euphemistically refers to a person's age. This formation follows the typical Chinese pattern of constructing abstract nouns (like age, length, weight) by pairing a core concept (岁) with a quantifying or categorizing term (数).