详细解释:n. 卷绕, 内卷, 回旋
【医】 退化, 复旧, 内转
词型变化：
形容词:involutional英语解释：
名词 involution:
reduction in size of an organ or part (as in the return of the uterus to normal size after childbirth)a long and intricate and complicated grammatical constructionmarked by elaborately complex detail同义词：elaborateness, elaboration, intricacy