The Collaborative International Dictionary
Sinapic
Sinapic \Sin"a*pic\, a. (Chem.) Of or pertaining to sinapine; specifically, designating an acid ( C11H12O5) related to gallic acid, and obtained by the decomposition of sinapine, as a white crystalline substance.
Wiktionary
sinapic
a. (context organic chemistry English) relating to sinapic acid or its derivatives