Etymology

tetrasodium

T1E1T1R1A1S1O1D2I1U1M3

Today it means: Four sodium atoms or ions in a compound Full definition →

English sodium ← Italian soda ← Arabic سُوَيْدَاء (suwaydāʔ)
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The story

  1. Proto-Indo-European*kʷetwóres
  2. Proto-Hellenic*kʷétwores
  3. Ancient Greekτέσσᾰρες (téssăres)
  4. Ancient Greekτετρᾰ- (tetră-)
  5. Englishtetra-
  6. Arabicسُوَيْدَاء (suwaydāʔ)
  7. Italiansoda
  8. Englishsoda
  9. Englishsodium
  10. English todaytetrasodium

From tetra- + sodium.

Etymology from Wiktionary, CC BY-SA 4.0.