A–Z Glossary

Birth weight

Birth weight is a newborn’s body weight measured shortly after delivery and interpreted according to gestational age and other factors.

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Typical baby size ranges

Typical baby size ranges

What “typical baby size” means “Typical” does not mean average, and average does not mean optimal for every infant. In clinical practice, baby size is described using anthropometric measurements: body weight, recumbent length, and head circumference. These values are plotted on age- and sex-specific growth charts, commonly using the World Health Organization (WHO) Child Growth […]