Etymology

extrasystole

E1X8T1R1A1S1Y4S1T1O1L1E1

Today it means: A premature contraction of the heart, producing an interruption or irregularity in heartbeat rhythm, associated with heart disease or the use of some pharmaceuticals. Full definition →

English systole ← Latin extrā ← Proto-Italic *eksteros
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The story

  1. Proto-Indo-European*h₁éǵʰ
  2. Proto-Indo-European*h₁éǵʰs
  3. Proto-Indo-European*h₁eǵʰsteros
  4. Proto-Italic*eksteros
  5. Latinexter
  6. Latinextrā
  7. Englishextra-
  8. Englishsystole
  9. English todayextrasystole

From extra- + systole.

Etymology from Wiktionary, CC BY-SA 4.0.