used to link two or more choices so that only one of them can happen, exist, or be true
Would you like tea or coffee?
We can walk to school or take the bus.
used to say what will happen if something is not done or does not happen; otherwise
Hurry up, or we'll be late.
Wear your coat, or you'll catch a cold.
used before an alternative word or phrase that says the same thing in different words
Sodium chloride, or table salt, is used in cooking.
Influenza, or flu, spreads quickly in winter.
a logical operation that is true if at least one of the statements it joins is true
In computer programming, the or checks if either condition is true.
The teacher showed a truth table to explain how or works.