conformation antipériplanairecommon nounSyllable Decompositionconformation antipériplanaireEtymologyexpandDefinition1. Conformation of a molecular structure in which the three bonds formed by two atoms or groups attached to two adjacent atoms form a torsion angle between +150° and +180° or between -150° and -180°.stéréochimieexpandTranslationsenglish:antiperiplanar conformation