heteropyknosis
noun
het·ero·pyk·no·sis
variants
also heteropycnosis
: the quality or state of some chromosomes or of parts of some chromosomes in a nucleus of taking up more stain and being more tightly coiled or of taking up less stain and being less tightly coiled than is usual compare isopyknosis
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“Heteropyknosis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/heteropyknosis. Accessed 7 Jul. 2026.
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