pykno- or pykn-
Thick, dense, or compact: pyknomorphous.
pyknodysostosis pyk·no·dys·os·to·sis (pĭk’nō-dĭs’ŏs-tō’sĭs) n. An inherited disorder characterized by short stature, delayed closure of the fontanelles, and hypoplasia of the terminal phalanges.
pyknomorphous pyk·no·mor·phous (pĭk’nō-môr’fəs) adj. Staining deeply because the stainable material is closely packed. Used of cells and tissue.
pyknosis pyk·no·sis (pĭk-nō’sĭs) n. A condensation and reduction in the size of a cell or cell nucleus, usually associated with hyperchromatosis.
pyknotic pyk·not·ic (pĭk-nŏt’ĭk) adj. Relating to or characterized by pyknosis.