Etymology

periastron

P3E1R1I1A1S1T1R1O1N1

Today it means: The point of an orbit in which a celestial body is at its closest to the star it is orbiting. Full definition →

Ancient Greek περί
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The story

  1. Ancient Greek · derived fromπερί“around”
  2. English todayperiastron

From Ancient Greek περί (perí, “around”) + ἄστρον (ástron, “star”).

Words from the same roots

Ancient Greekπερί all →

periodontalperigeeperiodontitisperinatologyperiosteumperi-perikroneperitropal

Etymology from Wiktionary, CC BY-SA 4.0.