noun. A colorless oily aromatic aldehyde, C₇H₆O, obtained naturally, as from the bitter almond, or made synthetically and used in perfumes and as a solvent and a flavoring.

noun. The oil of bitter almonds, C₆ H₅COH, a colorless liquid having a pleasant odor and soluble in water.

noun. A chemical compound (C6H5CHO) consisting of a benzene ring with an aldehyde substituent.

noun. Any of various derivatives of benzaldehyde.

"I also found that burning Styrofoam containers emits styrene, benzene, benzaldehyde, formaldehyde, plus various poly-aromatic hydrocarbons."

benzal  

aldehyde  apigenin  borneol  chavicol  cineole