Definition of ylid in English:

ylid

(also ylide)

Pronunciation /ˈilid/ /ˈɪlɪd/

noun

Chemistry
  • A compound that has an uncharged molecule containing a negatively charged carbon atom directly bonded to a positively charged atom of sulfur, phosphorus, nitrogen, or another element.

    ‘ammonium ylids’
    • ‘This reaction occurs between an ylide and a carbonyl group which ultimately yields the alkene.’

Origin

1950s from -yl+ -ide.