Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The outer layers of tissue of woody roots and stems, consisting of the cork cambium and the tissues produced by it, such as cork.

from The Century Dictionary.

  • noun In zoology, epiderm or cuticle forming an investing sheath or tube, as in some tubularian hydromedusans; a kind of hard perisarc or cortical layer of the cœnosarc of certain hydrozoans.
  • noun 2. In botany, the continuous layers of cork which cover the stems of many plants after they acquired a certain age.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) The outer layer of bark.
  • noun (Zoöl.) The hard outer covering of hydroids and other marine animals; the perisarc.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun botany The outer layer of plant tissue; the outer bark.
  • noun zoology The perisarc; the hard outer layer of hydroids and other marine animals.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From peri- + -derm

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Examples

  • Slide 4: The periderm (cork) • The periderm is the outer layer of the bark which replaces the epidermis and is formed by the cork cambium.

    Recently Uploaded Slideshows 2008

  • It may take the form of either epidermis or periderm.

    On Food and Cooking, The Science and Lore of the Kitchen Harold McGee 2004

  • It may take the form of either epidermis or periderm.

    On Food and Cooking, The Science and Lore of the Kitchen Harold McGee 2004

  • Our culinary experience of periderm is usually limited to the skins of potatoes, beets, and so on.

    On Food and Cooking, The Science and Lore of the Kitchen Harold McGee 2004

  • Our culinary experience of periderm is usually limited to the skins of potatoes, beets, and so on.

    On Food and Cooking, The Science and Lore of the Kitchen Harold McGee 2004

  • In addition to some of the above, Indian reports include root periderm brown scorch, Pythium sp., radish mosaic virus, damping off, Rhizoctonia solani, and the seed-borne Alternaria alternata.

    Chapter 27 1987

  • To form the wound periderm certain metabolic processes are necessary These processes use energy which is gained by expiring starch stored in the tuber.

    4 Yams 1978

  • Increased temperature and humidity stimulate the yam tubers to from cork cells which can hermetically close the lesions The cork cells are formed in the cork cumbium and then make their way to the wound areas which they close with several layers of wound periderm (BAUTISTA, 1990)

    4 Yams 1978

  • The yam worm particularly damages the periderm and subperiderm, cell layers which are directly under the cork shell.

    4 Yams 1978

  • The cork periderm and the cortex below this form the exterior protection for the root.

    5 Cassava 1978

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