- the first fecal excretion of a newborn child, composed chiefly of bile, mucus, and epithelial cells.
- fecal mass released at pupation by the larvae of some insects.
- the milky sap of the unripe seed pods of the opium poppy; crude opium.
Origin of meconium
Examples from the Web for meconium
It is found in the esophagus and stomach, and forms the meconium.Zoonomia, Vol. I
Meconium: the substance excreted by certain metabolic insects soon after their emergence from the chrysalis or pupa.Explanation of Terms Used in Entomology
John. B. Smith
The meconium is black, and when the infant is effectually eased of it, the subsequent stools are of a whitish cast.Buffon's Natural History, Volume III (of 10)
Georges Louis Leclerc, Comte de Buffon
The meconium is more abundant, and lower down in the intestines.
The bones are tolerably firm, and the meconium collects in the large intestines.
- the dark green mucoid material that forms the first faeces of a newborn infant
- opium or the juice from the opium poppy
Word Origin and History for meconium
"fecal discharge from a newborn infant," 1706, from Latin meconium "excrement of a newborn child," literally "poppy juice," from Greek mekonion "poppy-juice, opium," diminutive of mekon "poppy" (perhaps cognate with Old Church Slavonic maku, German Mohn "poppy"). So called by classical physicians for its resemblance. Related: Meconial.
- A dark green fecal material that accumulates in the fetal intestines and is discharged at or near the time of birth.