'embryonal sac' definitions:
Definition of 'embryonal sac'
From: GCIDE
- Embryonic \Em`bry*on"ic\, a. (Biol.) Of or pertaining to an embryo; embryonal; rudimentary. [1913 Webster]
- Embryonic sac or Embryonic vesicle (Bot.), the vesicle within which the embryo is developed in the ovule; -- sometimes called also amnios sac, and embryonal sac. [1913 Webster]