Etymology

mifepristone

M3I1F4E1P3R1I1S1T1O1N1E1

Today it means: A steroid medication that inhibits the action of progesterone, typically given orally in combination with misoprostol in early pregnancy to induce abortion. Full definition →

English ketone ← German Keton
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The story

  1. English(a)mi(no)phe(nyl)
  2. Englishpr(opargyl)
  3. Englishist-
  4. GermanKeton
  5. Englishketone
  6. English todaymifepristone

From (a)mi(no)phe(nyl) + pr(opargyl) + ist- (“alteration of (o)est(radiol)”) + -one.

Etymology from Wiktionary, CC BY-SA 4.0.