allantoic

American  

[al-uhn-toh-ik] / ˌæl ənˈtoʊ ɪk /

adjective

1. of or relating to the allantois.

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Other Word Forms

• postallantoic adjective

Etymology

Origin of allantoic

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

Example Sentences

In the Dipneusts and Amphibia, in which the allantoic sac first makes its appearance, it remains within the body-cavity, and functions entirely as bladder.

From The Evolution of Man — Volume 2 by Haeckel, Ernst Heinrich Philipp August

These urinary organs, acting as reservoir and duct for the urine excreted by the kidneys, originate from the innermost part of the allantoic pedicle.

From The Evolution of Man — Volume 2 by Haeckel, Ernst Heinrich Philipp August

Thus, the secondary, allantoic circulation gradually takes the place of the original vitelline circulation.

From The Evolution of Man — Volume 1 by Haeckel, Ernst Heinrich Philipp August

Cenogenetic processes, on the other hand, include such phenomena as the formation of yolk and the embryonic membranes, the temporary allantoic circulation, the navel, the curved and contracted shape of the embryo, and the like.

From Form and Function A Contribution to the History of Animal Morphology by E. S. (Edward Stuart) Russell

Organs common to both sexes.-- al.b., allantoic bladder. c.ad., corpus adiposum. cl., cloaca. int., intestine.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)