Final answer:
Neonatal bradycardia is an abnormally low heart rate in newborn babies. It can be defined as a heart rate less than 100 bpm.
Step-by-step explanation:
Neonatal bradycardia refers to an abnormally low heart rate in newborn babies. It is defined as a heart rate that is less than 100 beats per minute (bpm). Bradycardia in newborns can be a serious condition that requires medical attention. A heart rate of less than 60 bpm is generally considered more severe and may require immediate intervention.