allantoid, a. and n. Phys.
(əˈlæntɔɪd)
[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. n. 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. |