The name Justine is an English baby name. In English the meaning of the name Justine is: Just; upright. Feminine of Justin. The name Justine is an American baby name. In American the meaning of the name Justine is: Just; upright.
For infanticide among animals, see Infanticide (zoology). Infanticide (or infant homicide) is the intentional killing of infants. Parental infanticide researchers have found that mothers are far more likely than fathers to be the perpetrator for neonaticide and slightly more likely to commit infanticide in general. In many past societies, certain forms of infanticide were considered permissible.
Definition of infantile for English Language Learners. : 1  annoying and childish : very silly in a way that is not appropriate or polite. 2  medical : affecting babies or very young children.