Degenerative Shrinking of Cell Nucleus

This page is the CodyCross answer for the clue below from Brazilian Tour, Group 770, Puzzle 2 (Sonia Braga).

Question is: Degenerative Shrinking of Cell Nucleus

and the answer is: PYKNOSIS

Word Meaning:

PYKNOSIS — (biology) Shrinkage and condensing, such as that of a dying cell or the appearance of a cell's nucleus.

Definitions from Wiktionary.