from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The cell body of a neuron, containing the nucleus and organelles.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The cell body of a neuron or of an odontoblast
from The Century Dictionary and Cyclopedia
- n. The cell-body or cytoplasm of a nerve-cell, or neurone, as distinguished from its nucleus and its processes, the dendrites and neuraxon. The perikaryon consists of a twofold substance — an achromatic, fibrillar spongioplasm, regarded as conductive in function, and a trophoplasmic ground-substance, regarded as the seat of metabolic chemical changes.
peri- + Greek karuon, nut; see karyo-.(American Heritage® Dictionary of the English Language, Fourth Edition)