Vinculum

word

1. Noun

A bond of union; a tie.

2. Noun

A straight, horizontal mark placed over two or more members of a compound quantity, which are to be subjected to the same operation, as in the expression x2 + y2 - x + y.

3. Noun

A band or bundle of fibers; a fraenum.

4. Noun

A commissure uniting the two main tendons in the foot of certain birds.
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