a. Pertaining to, or designating, an acid found in many kinds
of grapes. It is also obtained from tartaric acid, with which it is
isomeric, and from sugar, gum, etc., by oxidation. It is a sour white
crystalline substance, consisting of a combination of dextrorotatory
and levorotatory tartaric acids.
a. 外消旋的
[医] 总状花的, [外]消旋的