Noun:

1. an abnormal condition in which an older child or adult retains infantile characteristics

2. infantile behavior in mature persons

infanten.王子；亲王infantn.婴儿；幼儿adj.婴儿的；初期的；幼稚的infant of low-birth weight低体重儿Infant shoe and doll shoes.香港求购婴儿鞋。Infant -formula milk powder婴儿配方奶粉Infants with severe pneumonia婴幼儿重症肺炎infant-caregiver attachment婴儿-保育员依恋Infant and preschool children婴幼儿infant idiopathic hypoglycemia婴儿特发性低血糖症Infant's behavior rating scale育幼院infant's printed stretch shirt因凡托利诺infant of non-diabetic mother无糖尿病母亲的婴儿

pancreatic infantilism胰腺性幼稚型

hypophysial infantilism垂体性幼稚型

regressive infantilism迟发幼稚型

idiopathic infantilism自发性幼稚型

tardy infantilism迟发幼稚型

lymphatic infantilism[医] 淋巴[体质]性幼稚型

intestinal infantilism季氏病,肠性幼稚型

cachectic infantilism恶病质性幼稚型