noun

• The dark green substance forming the first feces of a newborn infant.

  ‘Infants who pass thin meconium, which is yellow to light green and watery, are more likely to be healthy at birth.’

  More example sentences

  • ‘In 95 percent of newborns, meconium is passed by 24 hours of age.’
  • ‘The question as to why some infants may discharge meconium in times of stress and other infants do not has not been well studied.’
  • ‘A common presentation is failure to pass meconium in the first 24 hours coupled with a gradual onset of abdominal distension and vomiting.’
  • ‘Urine samples were collected from the women and meconium samples were collected from each baby.’