- A change in the electrical charge between the inside and the outside of a membrane. For example, neurons which are receiving signals become momentarily more positively charged than the outside of their membranes.
- The turning of polarized light into random light by reflecting it in all directions, so that it no longer vibrates in a single plane.
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.