1. The gray matter of the brain and other parts of the nervous system. 2. Obsolete term for mantle layer. [L. fem. of cinereus, ashy, fr. cinis, ashes]
* * *
ci·ne·rea sə-'nir-ē-ə n the gray matter of nerve tissue
* * *
ci·ne·rea (sĭ-nērґe-ə) [L. cinereus ashen hued] the gray matter of the nervous system.Medical dictionary. 2011.