A separation, disconnection, or in logic, a statement that says at least one of two or more alternatives must be true.
From Latin disjunctio, from disjungere. Originally meaning simple separation, it became formalized in logic and philosophy to describe inclusive or exclusive either-or statements.
Computer scientists use disjunction constantly in programming (the 'OR' operator), but it comes from ancient Roman philosophy—shows how old logical thinking still powers modern technology!
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