vicinal
Pronunciation: /ˈvɪsɪn(ə)l, vɪˈsʌɪn(ə)l/
Definition of vicinal
adjective
Origin:
early 17th century: from French, or from Latin vicinalis, from vicinus 'neighbour'
early 17th century: from French, or from Latin vicinalis, from vicinus 'neighbour'