a. [mod. form. on the non-Gr. form AMNIOS (prob. first in Fr. which has amnios, amniotique) after chaotic, Nilotic, demotic: see -OTIC. The Gr. form from ἀμνίον would have been ἀμνιακός, amniac.] Of or pertaining to an amnion; of the nature of, or characterized by, an amnion. a. Phys.
1822. Imison, Sc. & Art, II. 140. The amniotic acid is found in the liquor of the amnios of a cow.
1863. Watts, Dict. Chem., I. 128. The amniotic liquid contains albumin, pyin and in some instances glucose.
1877. Huxley, Anat. Inv. Anim., vii. 445. A more or less complete amniotic investment.
b. Bot.
1870. Hooker, Stud. Flora, 13. Nymphæaceæ embryo enclosed in the enlarged amniotic sac.