Pycnotic is a term used to describe something that is densely packed or thickened. Synonyms for the word pycnotic include compact, concentrated, condensed, dense, solid, and impenetrable. Pycnotic can also be used in the context of describing a biological specimen, where it would mean the cell's cytoplasm is dense and heavily stained, with a relatively small nucleus. In such a case, alternative synonyms for pycnotic could include hypertrophic, hyperplastic, enlarged, or thickened. Regardless of the context in which pycnotic is used, the meaning is consistent: something that has become solid, condensed, or thickened in some way.