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

  • n. An outer layer surrounding the cell membrane of certain microorganisms, such as a spirochete.
  • n. A cell membrane or cell wall.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative form of periblast..

from the GNU version of the Collaborative International Dictionary of English

  • n. Same as periblast.

from The Century Dictionary and Cyclopedia

  • n. The intercellular substance, matrix, or stroma of an organ or tissue of the body, containing and supporting the cells or other formations which are peculiar to such organ or tissue.
  • n. The peripheral or cytoplasmic portion of the cell, as distinguished from the endoplast, or nucleus: same as periblast.
  • n. An indefinite term for the attraction-sphere of the cell.


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