a. Phys. [f. ALLANTOIS + -IC: cf. mod.Fr. allantoïque.] Of or belonging to the allantois.
1836. Todd, Cycl. Anat. & Phys., I. 47/1. Certain acids almost peculiar to individual animals such as the … allantoic.
1850. Daubeny, Atom. Theory, xi. (ed. 2), 365. The allantoic fluid of the cow.
1880. Huxley, in Nature, No. 583. 203. The existing horse has a diffuse allantoic placentation.
