年轻化 is a verb-object-like compound meaning 'to make younger' or 'to rejuvenate', often used in organizational or demographic contexts. As an adverb, it describes a trend or process — for example, a company's management team becoming younger on average, or a population's age structure shifting downward. It's commonly paired with 趋向 (trend), 过程 (process), or 政策 (policy) in formal or business Chinese.