cis-trans isomerism

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Related to geometric isomer: Optical isomers

cis-trans isomerism

[′si¦stranz ī′säm·ə‚riz·əm]
(organic chemistry)
A type of geometrical isomerism found in alkenic systems in which it is possible for each of the doubly bonded carbons to carry two different atoms or groups; two similar atoms or groups may be on the same side (cis) or on opposite sides (trans) of a plane bisecting the alkenic carbons and perpendicular to the plane of the alkenic system.
References in periodicals archive ?
This chip also can be used for polar small molecules and structurally related compounds, such as geometric isomers and diastereoisomers.
Based on analysis of previously collected data, trans-ISA247 is more bioavailable and therefore we expect to administer the drug at a lower dose than the previous formulation which consisted of an equivalent mixture of the two geometric isomers (cis and trans)," stated Dr.

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