
1) Acid in certain grapes 2) Flowering in a certain way
Found on
https://www.crosswordclues.com/clue/racemic

racemic mixture. A mixture of equal parts of the levorotatory and dextrorotatory isomers of the the same substance. Racemic mixtures are not optically active.
Found on
http://antoine.frostburg.edu/chem/senese/101/glossary/r.shtml

• (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.
Found on
http://thinkexist.com/dictionary/meaning/racemic/

<chemistry> 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. ... Origin: Cf. F. Racemique. See ...
Found on
http://www.encyclo.co.uk/local/20973

(ra-se´mik) optically inactive, being composed of equal amounts of dextrorotatory and levorotatory isomers.
Found on
http://www.encyclo.co.uk/local/21001
Ra·ce'mic (rȧ*sē'mĭk)
adjective [ Confer French
racémique . See
Raceme .]
(Chemistry) 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 oxidatio...
Found on
http://www.encyclo.co.uk/webster/R/2
(r) Type: Term Pronunciation: rā-sē′mik, -sem′ik Definitions: 1. Denoting a mixture of optically active compounds that is itself optically inactive, being composed of an equal number of dextro- and levorotatory substances, which are separable. Those compounds chracterized by two or more chiral centers and internal compe...
Found on
http://www.medilexicon.com/medicaldictionary.php?t=74755

racemic Referring 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.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1823/
No exact match found.