Dictionary
throm•bus
Pronunciation: (throm'bus), [key]—
n.,
—pl. -biPronunciation: (-bī). [key]
Pathol.
a fibrinous clot that forms in and obstructs a blood vessel, or that forms in one of the chambers of the heart.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.