What does "oncology" mean?

The branch of medicine concerned with tumors, including study of their development, diagnosis, treatment, and prevention.

How do you pronounce "oncology"?

Pronounced //ɒŋˈkɒləd͡ʒi//.

//ɒŋˈkɒləd͡ʒi// noun

noun ·Uncommon ·Advanced level

Noun

1
The branch of medicine concerned with tumors, including study of their development, diagnosis, treatment, and prevention. countable, uncountable
2
the branch of medicine concerned with the study and treatment of tumors wordnet

"Experts on oncology have long recommended as a way to not get sick a regular eating of fruit, vegetables, cereals and legumes."

First attested 1857. By surface analysis, onco- + -logy, which see for more.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.