arachnoid membrane (noun) bag of waters: amniotic sac
Sinonime: astronomic, barn door, blimp, colossal,
excessive,
gargantuan, gigantic,
gross,
huge, humongous,
immense, jumbo, mammoth, massive,
monstrous, mountainous, prodigious,
stupendous, super-colossal, titanic, tremendous, vast, whopping
Antonime: insignificant,
little,
minute, small,
tiny