Pronunciation: (ath"u-rō'mu), [key]
—pl. -mas, -ma•taPronunciation: (-mu-tu). [key] Pathol.
1. a sebaceous cyst.
2. a mass of yellowish fatty and cellular material that forms in and beneath the inner lining of the arterial walls.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.