noun
enantiomer; optical isomer
Chemistry term for a pair of molecules that are mirror images of each other and non-superimposable.
光学異性体は、互いに鏡像の関係にある分子です。
Optical isomers are molecules that are mirror images of each other.
Compound of 光学 (こうがく, 'optics') + 異性体 (いせいたい, 'isomer').