Definition of Conformation

1. The spatial arrangement of the atoms affording distinction between stereoisomers which can be interconverted by rotations about formally single bonds. Some authorities extend the term to include inversion at trigonal pyramidal centres and other polytopal rearrangements. See also conformer; bisecting conformation, eclipsing conformation; chair, boat, twist; crown conformation; envelope conformation; half-chair; staggered conformation; tub conformation.