optical isomerism


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to optical isomerism: optical activity, geometric isomerism

optical isomerism

[′äp·tə·kəl ī′säm·ə‚riz·ən]
(physical chemistry)
Existence of two forms of a molecule such that one is a mirror image of the other; the two molecules differ in that rotation of light is equal but in opposite directions.