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

  • noun A covering or integument of an organ or body part.
  • noun The ventral part of the midbrain.

from The Century Dictionary.

  • noun In botany, the scaly coat which covers the leaf-buds of deciduous trees; also, one of the scales of such covering.
  • noun In anatomy, the larger and deeper or upper of two parts into which each crus cerebri is divisible, separated from the crusta by the substantia nigra.
  • noun The outer porous layer of the shell of polyplacophorous mollusks or chitons, which covers the inner porcelanous articulamentum.

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

  • noun (Anat.) A covering; -- applied especially to the bundles of longitudinal fibers in the upper part of the crura of the cerebrum.

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

  • noun The ventral portion of the midbrain, divided from the tectum by the cerebral aqueduct and the periaqueductal grey
  • noun Containing the following nuclei: red nucleus, substantia nigra, ventral tegmental area


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

[Latin tegumentum, tegmentum, covering, from tegere, to cover; see (s)teg- in Indo-European roots.]



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