amnios
(ˈæmnɪəs)
[a variant of amnion, founded upon an erroneous form of the Greek.]
1. Phys. = amnion.
| 1657 Phys. Dict., Amnios, the inner skin that compasseth the child round in the womb. 1660 Boyle New Exp. Phys.-Mech. 374 The upper part of the involving Amnios. 1797 Phil. Trans. LXXXVII. 193 The two membranes..the chorion and amnios. 1828 Kirby & Spence Entomol. IV. xliv. 236 Regarded as fœtuses in their amnios rather than eggs. 1845 Noel Richter's Flower etc. Pieces II. ix. 37 A little hidden creature, which has past from the fœtus-slumber into the sleep of death, out of the amnios-skin of this world into the shroud, the amnios-skin of the next. |
2. Bot. ‘The fluid that is produced within the sac which receives the embryo-rudiment and engenders it.’ Treas. Bot. 1866.
| 1816 Keith Physiol. Bot. II. 293 The amnios had just made its appearance in the upper region of the chorion. 1830 Lindley Nat. Syst. Bot. Introd. 33 The amnios always surrounds the embryo in an early state. |