| a white, crystalline, water-insoluble powder, C9H8O2, usually obtained from cinnamon or synthesized: used chiefly in the manufacture of perfumes and medicines. |
| cinnamic acid n. A white crystalline acid, C6H5CHCHCOOH, obtained from cinnamon or from balsams such as storax or made synthetically and used chiefly to manufacture perfumery compounds. [cinnam(on) + -ic.] |
cinnamic acid  (sə-nām'ĭk) Pronunciation Key
A white crystalline organic acid obtained from cinnamon or from balsams, or made synthetically. It is used to manufacture perfumery compounds. Chemical formula: C9H8O2. |