Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An egg-containing capsule, such as an ootheca or a Graafian follicle.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A Graafian follicle; any sac containing an ovum or ova.
  • n. The inner layer of the fibrous wall of a Graafian follicle.

from the GNU version of the Collaborative International Dictionary of English

  • n. A Graafian follicle; any sac containing an ovum or ova.
  • n. The inner layer of the fibrous wall of a Graafian follicle.

from The Century Dictionary and Cyclopedia

  • n. A sac, cyst, or cell containing an ovum or ova; an ovicell, ovicyst, or ovicapsule: variously applied.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From ovum and sac.

Examples

  • The afflux of blood to the uterus during the rupture of the ovisac, cannot be shown to be useful by any effort of teleological physiologists.

    The Education of American Girls

  • At (4) an ovum with its surrounding group of cells is more distinct and near the centre of the ovary; a fluid is appearing within the ovisac as the development proceeds. (5) is a much more mature ovisac or Graafian follicle.

    Text Book of Biology, Part 1: Vertebrata

  • At its lower end are an ovisac and bulbous "roots," which would normally be embedded in the whale bone.

    PhysOrg.com - latest science and technology news stories

  • The cell growth in question is effected in the ovaries; the final stage of the process, the rupture of the containing cell or ovisac, and escape of the ovule, is attended by a concentration of nervous activity in the ganglionic masses sending nerves to those organs -- analogous to that which occurs in the solar plexus at periods of digestion; the fall of the ovule is itself analogous to the shedding of epithelial cells in the gastric follicles; the afflux of blood to the utero-ovarian veins, analogous to the periodical congestion of the gastro-splenic vascular apparatus.

    The Education of American Girls

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