noun
premature baby; preterm infant
Medical and everyday term for a baby born before 37 weeks of gestation.
早産児は特別なケアが必要です。
Premature babies need special care.
彼女は早産児として生まれました。
She was born as a premature baby.
Compound of 早産 (premature birth) + 児 (child). The reading そうざんじ follows standard on'yomi.