The term designates a newborn demonstrating exceptional health and vigor, often exceeding typical developmental milestones for their age. As an example, such an infant might exhibit advanced alertness, robust immune response, or rapid weight gain relative to established pediatric norms. This characterization is used informally.
Recognizing these characteristics in early infancy can provide reassurance to caregivers and potentially inform pediatric care strategies. Historically, observing unusually healthy infants has been a source of fascination and positive reinforcement for parents and healthcare providers alike. Furthermore, it underscores the broad spectrum of normal variation within child development.