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Pronunciation: ent'ge-gen

Definition: State in which the two higher-ranking groups attached to the different atoms in a double bond, usually a carbon-carbon double bond, are on opposite sides of the double bond (hence, analogous to trans-). Also occurs when those groups are on opposite sides of a ring structure.

[Ger. opposite]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.