The definition of a logical fallacy is an error in reasoning.
An example of a logical fallacy is to assume that a child's toy will never break since it has been thrown on the floor several times and it hasn't broken.
(plural logical fallacies)
- A fallacy; a clearly defined error in reasoning used to support or refute an argument, excluding simple unintended mistakes.
- "You can't prove Santa doesn't exist, therefore Santa does exist", is a common logical fallacy.
- A formal fallacy.
- A valid syllogism contains three terms; with four it commits the logical fallacy known as quaternio terminorum.