low-birth-weight infant
low·birth·weigh·tinfant
noun
1.
an infant born weighing less than 5.5 pounds (2500 grams) regardless of gestational age
- “a low-birth-weight infant is at risk for developing lack of oxygen during labor”
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Broader terms
WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.