a. and sb. Phys. [mod. ad. Gr. ἀλλαντο-ειδής; f. ἀλλᾶντ- sausage + -ειδής shaped: see -OID, and cf. mod. Fr. allantoïde.]
A. adj. Of or pertaining to the allantois.
1633. P. Fletcher, Purple Isl., II. xxiii. The last, from Urine-lake with waters base, In the allantoid sea empties his flowing race.
1836. Todd, Cycl. Anat. & Phys., I. 646/2. In which [the Batrachia] during fœtal life no allantoid membrane is ever formed.
B. sb. The allantoid membrane or ALLANTOIS.
1667. Phil. Trans., II. 512. Then he proceeds to the description of the Allantoides.
1847–9. Todd, Cycl. Anat. & Phys., IV. 744/1. The allantoid in the mare does not form a closed bag.
