optic rotatory dispersion

op·ti·c ro·ta·to·ry dis·per·sion (ORD),

the change in optic rotation with the wavelength of the incident monochromatic polarized light; the displacement of the former from zero within the absorption band is known as the Cotton effect.

op·tic ro·ta·to·ry dis·per·sion

(op'tik rō'tă-tōr'ē dis-pĕr'zhŭn)

The change in optic rotation with the wavelength of the incident monochromatic polarized light; the displacement of the former from zero within the absorption band is known as the Cotton effect.