Extraneous

What does EXTRANEOUS mean?

1. adjective

   not pertinent to the matter under consideration

   “an issue extraneous to the debate”

2. adjective

   not essential

   “the ballet struck me as extraneous and somewhat out of keeping with the rest of the play”

3. adjective

   not belonging to that in which it is contained; introduced from an outside source

   “water free of extraneous matter”

4. adjective

   coming from the outside

   “extraneous light in the camera spoiled the photograph”

Definitions from WordNet 3.1, Princeton University.