Onapristone

//ˌoʊ.nəˈpɹɪˌstoʊn// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A synthetic antiprogestogen used to combat prostate cancer. uncountable

Etymology

From ona- (of unknown origin) + (mife)pristone.

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