婴幼儿 yīngyòu'ér infant and toddler Definitions Defs Origin Strokes Stroke Words Sentences Sents 婴 嬰 yīng noun infant (bound form) infant; newborn baby幼儿 幼兒 yòu'ér noun young child A young child; specifically an infant, toddler, or preschooler generally between the ages of one and six years old