Skip to content
PregWeeks.com
Postpartum Term

Low Birth Weight

Last updated: June 2026

Definition

A newborn weight of less than 5 pounds, 8 ounces (2,500 grams) at birth, regardless of gestational age.

Clinical Context

In obstetrics and maternal healthcare, terms like Low Birth Weight represent key anatomical, physiological, or developmental parameters monitored during gestation, labor, and the postpartum stages. Understanding these terms empowers parents to converse with doctors, interpret ultrasound reports, and track fetal progress.

Medical Notice: This term definition is for educational and planning purposes only. It is not medical advice. If you have any clinical questions or concerns about low birth weight in your own pregnancy, consult your obstetrician or health team immediately.

Term FAQs

What is the definition of Low Birth Weight?

In pregnancy and obstetrics, Low Birth Weight is defined as: A newborn weight of less than 5 pounds, 8 ounces (2,500 grams) at birth, regardless of gestational age.

What category does the term Low Birth Weight belong to?

The term Low Birth Weight belongs to the Postpartum category of pregnancy and neonatal health terminology.

Why is understanding Low Birth Weight important?

Understanding Low Birth Weight helps expectant mothers and partners make sense of medical reports, doctor consultations, and gestational developments.

Related Terms

Apgar Score

A quick clinical evaluation performed at 1 and 5 minutes after birth to assess a newborn's physical condition across heart rate, breathing, muscle tone, reflexes, and skin color.

Bilirubin

A yellow substance created when old red blood cells break down; high levels in newborns can cause neonatal jaundice.

Colostrum

The thick, yellowish first milk produced by the breasts late in pregnancy and just after birth, highly rich in antibodies and nutrients.
← Back to Glossary Index