Incident

1. Coming or happening accidentally; not in the usual course of things; not in connection with the main design; not according to expectation; casual; fortuitous.
2. Dependent upon, or appertaining to, another thing, called the principal.
3. Liable to happen; apt to occur; befalling; hence, naturally happening or appertaining.
4. That which happens aside from the main design; an accidental or subordinate action or event.
5. That which falls out or takes place; an event; casualty; occurrence.
6. Something appertaining to, passing with, or depending on, another, called the principal.
7. Falling or striking upon, as a ray of light upon a reflecting surface.