https://doi.org/10.1351/goldbook.E02071
A sample of a chiral substance whose enantiomeric ratio is greater than 50 : 50 but less than 100 : 0.
Source:
PAC, 1996, 68, 2193. (Basic terminology of stereochemistry (IUPAC Recommendations 1996)) on page 2207 [Terms] [Paper]