meconium

From Latin mēcōnium (“opium; excrement of a newborn child”), from Ancient Greek μηκώνιον (mēkṓnion, “poppy-juice, opium”), from μήκων (mḗkōn, “poppy”).

• Rhymes: -əʊniəm

meconium (countable and uncountable, plural meconiums)

1. (medicine) A dark green mass, the contents of the fetal intestines during the later stages of mammalian gestation, that forms the first faeces of the newborn
2. (obsolete) opium

• meconium aspiration

• encomium