Definitions

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

  • noun Any of a group of glycoproteins found especially in the secretions of mucous membranes.

from The Century Dictionary.

  • noun A nitrogenous body found in all connective tissue, and the chief constituent of mucus. It is a glutinous substance, soluble in weak alkalis, but not in water.

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

  • noun (Bot. Chem.), obsolete See mucedin.
  • noun (Physiol. Chem.) Any of a class of high molecular weight glycoproteins which are contained in mucus, and give to the latter secretion its peculiar ropy character. They are found in all the secretions from mucous glands, and also between the fibers of connective tissue, as in tendons. They form viscous solutions and serve to provide lubrication for movement within body cavities, and some protection of surfaces. See Illust. of Demilune.

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

  • noun biochemistry Any of several glycoproteins found in mucus

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a nitrogenous substance found in mucous secretions; a lubricant that protects body surfaces

Etymologies

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