from The Century Dictionary.

  • noun Same as yolk-sac.


Sorry, no etymologies found.


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  • At this period every yolk cell is itself like a whole yolk; for each cell is as full of lesser cells as the yolk-bag itself.

    The Atlantic Monthly, Volume 10, No. 61, November, 1862

  • Along the middle of the back there runs a high fin, transparent as glass, and this is continued round the tail and forwards to the swelling caused by the yolk-bag.

    Chatterbox, 1906


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