Etymology

cardiogram

C3A1R1D2I1O1G2R1A1M3

Today it means: The visual output an electrocardiograph produces Full definition →

Ancient Greek γράμμα (grámma) ← Proto-Hellenic *grə́pʰō ← Proto-Indo-European *gerbʰ-
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The story

  1. Proto-Indo-European*ḱerd-
  2. Proto-Indo-European*ḱḗr
  3. Proto-Indo-European*ḱr̥díyeh₂
  4. Proto-Hellenic*kərdíyā
  5. Ancient Greekκαρδία (kardía)
  6. Englishcardio-
  7. Proto-Indo-European*gerbʰ-
  8. Proto-Hellenic*grə́pʰō
  9. Ancient Greekγρᾰ́φω (grắphō)
  10. Ancient Greekγράμμα (grámma)
  11. English todaycardiogram

From cardio- + -gram.

Etymology from Wiktionary, CC BY-SA 4.0.