Vicinal /(?; 277)/

Vic·i·nal

Vicinal

a.
  1. Near; vicine.
  2. Having the substituted groups on the same carbon atom. (Organic Chem.)

Phrases & Compounds
Vicinal planes
subordinate planes on a crystal, which are very near to the fundamental planes in angles, and sometimes take their place. They have in general very complex symbols.