Pronunciation: (ving'kyu-lum), [key]
—pl. -laPronunciation: (-lu). [key]
1. a bond signifying union or unity; tie.
2. Math.a stroke or brace drawn over a quantity consisting of several members or terms, as &aspplusspbhorbarover;, in order to show that they are to be considered together.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.