Definition of acetoin in English:

acetoin

noun

Chemistry
  • A pale yellow to colourless liquid which solidifies just below room temperature and which gives butter its characteristic aroma.

    Systematic name: 3-hydroxybutan-2-one; CH₃C(O)CH(OH)CH₃.

Pronunciation

acetoin

/əˈsiːtəʊɪn/ /ˈasɪtəʊɪn/

Origin

Early 20th century. From aceto- + -in, after benzoin.