| achromatin | (n) the part of a cell nucleus that is relatively uncolored by stains or dyes |
| achromatinic | (adj) (of substance of a cell nucleus) not readily colored by stains, Ant. chromatinic |
| Achromatin | n. (Biol.) Tissue which is not stained by fluid dyes. W. Flemming. [ 1913 Webster ] |
| achromatinic | adj. |