oxazole

 
Pronunciation: /ˈɒksəzəʊl/

noun

[mass noun] Chemistry
  • a volatile liquid with weakly basic properties, whose molecule contains a five-membered ring important as the basis of a number of medicinal drugs.
    • A heterocyclic compound; chemical formula: C3H3NO

Origin:

late 19th century: from ox- 'oxygen' + azo- + -ole