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The Collaborative International Dictionary
Cerebrin

Cerebrin \Cer"e*brin\, n. [From Cerebrum.] (Physiol. Chem.) A nonphosphorized, nitrogenous substance, obtained from brain and nerve tissue by extraction with boiling alcohol. It is uncertain whether it exists as such in nerve tissue, or is a product of the decomposition of some more complex substance.

Wiktionary
cerebrin

n. (context biochemistry dated English) A non-phosphorized nitrogenous substance, obtained from brain and nerve tissue by extraction with boiling alcohol. It is uncertain whether it exists as such in nerve tissue, or is a product of the decomposition of some more complex substance.