Oil of cinnamon

Also found in: Medical.
a colorless aromatic oil obtained from cinnamon and cassia, and consisting essentially of cinnamic aldehyde, C6H5.C2H2.CHO.

See also: Cinnamon

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Similarly, essential oil of cinnamon (EOC) applied to xenograft model of Hep-2 cells (laryngeal squamous cell carcinoma) inhibited the EGFR-TK (epidermal growth factor receptor-tyrosine kinase) activity (89% inhibition noted) resulting in 43.5% decrease in the tumor burden [14].
Essential oil of cinnamon (Cinnamomum zeylanicum from bark; originated in Cylan-Sri Lanka) was obtained from Chemical Abstracts Service (CAS) (registry number 84649-98-9) and cinnamaldehyde (a final percentage of 72.08%) was supplied by Esperis (Milan, Italy).
The only adverse effect reported is contact dermatitis, mainly resulting from essential oil of cinnamon. Cinnamon has not yet been tested for any adverse effects in pregnant women.