Often denoted with a large "∨", used like a \sum (Sigma) or an integral sign: x₁ ∨ ... ∨ x_n is

    n
  \  /
   \/     x
  i = 1    i

Dis*junc"tion (?), n. [L. disjunctio.]

1.

The act of disjoining; disunion; separation; a parting; as, the disjunction of soul and body.

2.

A disjunctive proposition.

Coleridge.

© Webster 1913.