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Related to geometric isomer: Optical isomers
a form of isomerism displayed by unsaturated or ring compounds where free rotation around a bond (usually a carbon-carbon bond) is restricted, for example, the isomerism of a cis- or trans- compound as in oleic acid and elaidic acid. Compare: cis-, entgegen, trans-, zusammen.
Farlex Partner Medical Dictionary © Farlex 2012
A chemical compound having the same molecular formula as another but a different geometric configuration, as when atoms or groups of atoms are attached in different spatial arrangements on either side of a bond or a ring.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.