geometric isomerism

noun Chemistry.

1. each of two or more chemical compounds having the same molecular formula but a different geometric arrangement; an unsaturated compound or ring compound in which rotation around a carbon bond is restricted, as in cis- and trans- configurations.

n.

1. A form of isomerism displayed by unsaturated compounds or by ring compounds, where rotation about a carbon bond is restricted, as in cis and trans configurations.

1. Any of two or more stereoisomers that differ in the arrangement of atoms or groups of atoms around a structurally rigid bond, such as a double bond or a ring. Geometric isomers differ from one another in physical properties like melting and boiling points. Compare enantiomer.