Dictionary
vic•i•nal
Pronunciation: (vis'u-nl), [key]—
adj.
1. of, pertaining to, or belonging to a neighborhood or district.
2. neighboring; adjacent.
3. Crystall.noting a plane the position of which varies very little from that of a fundamental plane of the form.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.