acetaldehyde

n. (Chemistry) colorless flammable liquid (used in the manufacture of acetic acid, perfumes, and drugs)

Acetaldehyde, sometimes known as ethanal, is an organic chemical compound with the formula CH3CHO or MeCHO. It is a flammable liquid with a fruity smell. Acetaldehyde occurs naturally in ripe fruit, coffee, and fresh bread and is produced by plants as part of their normal metabolism. It is popularly known as the chemical that causes hangovers.
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Acetaldehyde /ac·et·al·de·hyde/ a colorless, volatile, flammable liquid used in the manufacture of acetic acid, perfumes, and flavors; it is also an [more]Acetaldehyde - Community and Resources

Noun
1. a colorless volatile water-soluble liquid aldehyde used chiefly in manufacture of acetic acid and perfumes and drugs
(synonym) ethanal
(hypernym) aldehyde

n. acetaldehyde, chemical compound