What is "incident proposition"

Incident \In"ci*dent\, a. [L. incidens, -entis, p. pr. & of incidere to fall into or upon; pref. in- in, on + cadere to fall: cf. F. incident. See Cadence.]

1. Falling or striking upon, as a ray of light upon a reflecting surface.

2. Coming or happening accidentally; not in the usual course of things; not in connection with the main design; not according to expectation; casual; fortuitous.

   As the ordinary course of common affairs is disposed of by general laws, so likewise men's rarer incident necessities and utilities should be with special equity considered.
   --Hooker.

3. Liable to happen; apt to occur; befalling; hence, naturally happening or appertaining.

   All chances incident to man's frail life.
   --Milton.

   The studies incident to his profession.
   --Milward.

4. (Law) Dependent upon, or appertaining to, another thing, called the principal.

   Incident proposition (Logic), a proposition subordinate to another, and introduced by who, which, whose, whom, etc.; as, Julius, whose surname was C[ae]sar, overcame Pompey.
   --I. Watts.