oncology - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

First attested 1857, from New Latin onco- (“tumor”), from Ancient Greek ὄγκος (ónkos, “lump, mass, bulk”) +‎ -logy (“study of”).

• IPA^(key): /ɒŋˈkɒləd͡ʒi/

oncology (countable and uncountable, plural oncologies)

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

   Hyponym: cancerology (dated)