Definitions

from The Century Dictionary.

  • noun A substance allied to ceratin.

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

  • noun (Physiol. Chem.) A substance, resembling keratin, present in nerve tissue, as in the sheath of the axis cylinder of medullated nerve fibers. Like keratin it resists the action of most chemical agents, and by decomposition with sulphuric acid yields leucin and tyrosin.

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

  • noun biochemistry The protein component of the myelin sheath

Etymologies

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