from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of the repeating subunits of chromatin, consisting of a DNA chain coiled around a core of histones.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of the subunits that repeat in chromatin; a coil of DNA surrounding a histone core
nucleo- + -some (Wiktionary)