Of no importance or relevance; inconsequential or irrelevant.(adjective)
Having no material body or form.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "immaterial" in a sentence
"[NOTE TO SELF, FIND THIS: Sergio Bologna, "Problematiche del lavoro autonomo in Italia" (Part I), Altreragioni, no. 1 (1992), pp. 11-32; discussion of the term immaterial labor on 10-27.]"
"Meanwhile, Mr. Tondato said Autogrill has suffered minimal impact from the ongoing crisis in Japan following the recent earthquake and tsunami, with what he described as an "immaterial decrease" in boarding cards to and from Japan in recent days."
"Even among people who believe in immaterial concepts like mind, there would be much disagreement over the cause of the concepts."