Dictionary
on•col•o•gy
Pronunciation: (ong-kol'u-jē), [key]—
n.
1. the branch of medical science dealing with tumors, including the origin, development, diagnosis, and treatment of malignant neoplasms.
2. the study of cancer.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.