disjunction

noun

1. 1

   The act of disjoining; disunion, separation.

2. 2

   The state of being disjoined.

3. 3

   The proposition resulting from the combination of two or more propositions using the or operator.

4. 4

   A logical operator that results in “true” when some of its operands are true.

5. 5

   During meiosis, the separation of chromosomes (homologous in meiosis I, and sister chromatids in meiosis II).