A resinous or oily substance extracted from cinnamon bark, formerly used in medicine and perfumery.
From cinnamon + -ein (Greek suffix for substances or proteins). Named in the 18th-19th centuries by pharmacists isolating active ingredients from cinnamon.
Old apothecaries treasured cinnamein as a medicine because it concentrated the 'virtue' of cinnamon—they didn't understand chemistry, but they knew that boiling down the bark created something more potent.
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