unstained
/ʌnˈsteɪnd
/adjective
Not stained: his unstained jeans...
- The cell walls of the interior tissues did stain with a particularly abrupt transition from unstained to stained just behind the root cap and at the outer cortex, but nowhere were nuclei seen to stain.
- The samples were examined unstained and stained, using low and high power magnifications.
- Stained pollen grains (white arrow) are viable, unstained grains (black arrows) are not.
