butanedione

== English == === Etymology === From butane +‎ dione. === Noun === butanedione (plural butanediones) (organic chemistry) The simplest diketone CH3-CO-CO-CH3, used as an aroma agent; and derivative of this compound ==== Synonyms ==== diacetyl ==== See also ==== popcorn lung (a condition caused by inhaling butanedione) artificial butter flavor (the flavoring derived from butanedione)