Etymology

petrodollar

pe·tro·dol·lar
P3E1T1R1O1D2O1L1L1A1R1

Today it means: Money (either notionally or specifically in dollars or other currencies) earned from the sale of oil, often especially as considered among a national economy's principal revenue streams. Full definition →

English dollar ← Dutch daler ← Middle Low German dāler
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The story

  1. Ancient Greekπέτρᾱ (pétrā)
  2. Latinpetra
  3. Englishpetro-
  4. Proto-Germanic*dalą
  5. Proto-West Germanic*dal
  6. Old High Germantal
  7. Middle High Germantal
  8. GermanTal
  9. GermanTaler
  10. Middle Low Germandāler
  11. Dutchdaler
  12. Englishdollar
  13. English todaypetrodollar

From petro- (prefix meaning ‘petroleum; oil export’) + dollar, possibly modelled after Eurodollar.

Etymology from Wiktionary, CC BY-SA 4.0.