Related formspost·al·lan·to·ic, adjective
Examples from the Web for allantoic
It implies on the whole that the Marsupials have sprung from a stock with an allantoic placenta.The Cambridge Natural History, Vol X., Mammalia|Frank Evers Beddard
Blood then ceases to flow along the allantoic vessels; they become obliterated.
The allantoic arteries in the cord wind in a spiral manner round the allantoic vein.
Deposits of urates now become abundant in the allantoic fluid.
The allantoic cavity persists (Owen), but the allantois only covers the placental area of the chorion.