enantiomer
noun
- 1 of 2 stereoisomers that are mirror images of each other that are non-superposable,not identical,much as one's left&right hands are the same except for being reversed along one axis(the hands cannot be made to appear identical simply by reorientatio
Wiktionary
noun
Etymology: From enantio- + -mer.
- One of a pair of stereoisomers that is the mirror image of the other, but may not be superimposed on this other stereoisomer.