Dictionary
con•ta•gium
Pronunciation: (kun-tā'jum, -jē-um), [key]—
n.,
—pl. -giaPronunciation: (-ju, -jē-u). [key]
Pathol.
the causative agent of a contagious or infectious disease, as a virus.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.