hydrocinnamic acid
[ hahy-droh-si-nam-ik, -druh-sin-uh-mik, hahy- ]
/ ˈhaɪ droʊ sɪˈnæm ɪk, -drəˈsɪn ə mɪk, ˌhaɪ- /
noun
a white crystalline compound, C9H10O2, with a floral odor, used in perfumes and flavoring.