karyochrome

from The Century Dictionary.

• noun In neurology, a name given by Nissl to certain nerve-cells in which the cell-body is very small but in which the nucleus is as large as in ordinary nerve-cells or at any rate larger than that of a neuroglia cell. See caryochrome.

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

• noun cytology, dated A type of neuron that has a nucleus that stains intensely