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EtymologyEdit

First attested 1857, from New Latin onco- (tumor). from Ancient Greek ὄγκος (ónkos, lump, mass, bulk) +‎ -logy (study of), from Ancient Greek λογία (logía), from λόγος (lógos, word).

PronunciationEdit

NounEdit

oncology (countable and uncountable, plural oncologies)

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

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