Which term is used for a child, aged 12 or under, who is unaccounted for?

The term "missing child" specifically refers to a situation where a child aged 12 or under cannot be located and their whereabouts are unknown. This designation is crucial for initiating search efforts and may involve law enforcement agencies to ensure the child's safety and locate them promptly. It encompasses various scenarios, such as when a child wanders away from home, is lost in a public space, or is unaccounted for due to other circumstances.

While terms like "endangered minor" may apply in certain situations—typically when there is a risk to the child's safety or well-being—they do not specifically denote the status of being unaccounted for, as "missing child" does. Similarly, "child abduction" implies that the child has been taken against their will, which is a more specific and serious situation. On the other hand, "lost child" could describe a child who has temporarily separated from guardians but doesn't convey the broader implications and urgency associated with a child being missing as understood in law enforcement terminology.

Thus, "missing child" is the most accurate and commonly adopted term for a child who is unaccounted for and requires immediate attention and action.