allantoic

[ al-uh n-toh-ik ]

/ ˌæl ənˈtoʊ ɪk /

of or relating to the allantois.

Origin of allantoic

First recorded in 1830–40; allanto(is) + -ic

post·al·lan·to·ic, adjective

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 Works of Francis Maitland Balfour, Volume III (of 4) |Francis Maitland Balfour
The allantoic arteries in the cord wind in a spiral manner round the allantoic vein.

The Works of Francis Maitland Balfour, Volume III (of 4) |Francis Maitland Balfour
Deposits of urates now become abundant in the allantoic fluid.

The Works of Francis Maitland Balfour, Volume III (of 4) |Francis Maitland Balfour

The allantoic cavity persists (Owen), but the allantois only covers the placental area of the chorion.

The Works of Francis Maitland Balfour, Volume III (of 4) |Francis Maitland Balfour