| Noun | 1. | body substance - the substance of the body substance - the real physical matter of which a person or thing consists; "DNA is the substance of our genes" body, organic structure, physical structure - the entire structure of an organism (an animal, plant, or human being); "he felt as if his whole body were on fire" solid body substance - the solid parts of the body chromatin, chromatin granule - the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes achromatin - the part of a cell nucleus that is relatively uncolored by stains or dyes linin - an obsolete term for the network of viscous material in the cell nucleus on which the chromatin granules were thought to be suspended ground substance, intercellular substance, matrix - the body substance in which tissue cells are embedded |