karyomicrosome

kar·y·o·mi·cro·some

(kar'ē-ō-mī'krō-sōm),
One of the minute particles or granules making up the substance of the cell nucleus.
Synonym(s): nucleomicrosome
[karyo- + G. mikros, small, + soma, body]

karyomicrosome

(kăr″ē-ō-mī′krō-sōm) [″ + mikros, small, + soma, body]
Any of the segments or portions of chromatin within the nucleus.