Definition of vicinal in English:

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Pronunciation: /ˈvɪsɪn(ə)l/


1.1 Chemistry Relating to or denoting substituents attached to adjacent atoms in a ring or chain.
Example sentences
  • The epoxide hydrolases are a family of enzymes that hydrate simple epoxide to vicinal diols and arene oxides to transdihydrodiols.
  • The latter are also called vicinal diols, or 1,2-diols.
  • The number of vicinal hydroxyl groups corresponds to the chemical and biological activity of the compound; thus kaempferol is often less active than quercetin and myricetin.
2(Of a railway or road) serving a neighbourhood; local.


Early 17th century: from French, or from Latin vicinalis, from vicinus 'neighbour'.

Words that rhyme with vicinal

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