An accessory nucleus or small mass of chromatin lying near the nucleus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for paranucleus
In the latter case it is often called the paranucleus or micronucleus.A Guide for the Study of Animals|Worrallo Whitney