enantiomer
n 1: either one of a pair of compounds (crystals or molecules)
that are mirror images on each other but are not identical
[syn: {enantiomorph}, {enantiomer}]
Enantiomer \E*nan"ti*o*mer\, n. [Gr. 'enanti`os opposite +
-mer.] (Chem.)
either of a pair of optical isomers of a chemical substance
whose molecules are mirror images of each other, i. e., are
related to each other as a right-handed to a left-handed
glove; -- meaningful only for structures which have internal
asymmetry.
-- {E*nan`ti*o*mer"ic}, a.
[PJC]