cyclopentadiènone

== French == === Etymology === From cyclopentadiène +‎ -one. === Pronunciation === IPA(key): /si.klɔ.pɛ̃.ta.djɛ.nɔn/ ~ /si.klɔ.pɛ̃.ta.dje.nɔn/ === Noun === cyclopentadiènone m (plural cyclopentadiènones) (organic chemistry) cyclopentadienone