vic·i·nal /ˈvɪsṇəl, ˈvɪsnəl/
(a.)附近的,接近的,一地方的,本地的
Vic·i·nal a.
1. Near; vicine.
Vicinal planes Min., 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.
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vicinal
adj : belonging to or limited to a vicinity