2. Descriptive of something which is not important or relevant: Mr. Jackson explained to his student, Judy, that there were too many extraneous sentences in her essay which were not related to the topic she had chosen to write about.
3. Etymology: from Latin extraneus, "external, strange"; literally "that which is without" or "outside".
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The reporter was able to speed up the process of completing her report by eliminating much of the extraneous comments made by some of the people.
Someone once said that creativity is intrinsic to human existence.
After getting rid of all the extraneous paragraphs in the new novel, the editor felt that only the key intrinsic descriptions remained; all of which were strengthening elements in the story line.