Definition of "meningioma" [meningioma]

• A slow-growing tumor of the meninges, occurring most often in adults. (noun)

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.

• "A meningioma is a slow-growing tumor in the membranes that cover the brain, mostly occurring in older women."
• "For cancers known as meningioma, the incidence rate increased by 0. 8% among men and, after the early 1990's, by 3. 8% among women."
• "For slow-growing tumors such as meningioma and acoustic neuroma, as well as for glioma among long-term users, the absence of association reported thus far is less conclusive because the observation period has been too short"