noun
large baby; macrosomic baby
Medical term for a newborn with excessive birth weight, typically over 4,000 grams. Used in clinical contexts.
巨大児の出産は、帝王切開になることがあります。
Delivery of a macrosomic baby may require a cesarean section.
妊娠糖尿病は巨大児のリスクを高めます。
Gestational diabetes increases the risk of having a large baby.
Compound of 巨大 (kyodai, 'huge') and 児 (ji, 'child, infant'). A straightforward medical coinage.