Etymology

meningococcal

M3E1N1I1N1G2O1C3O1C3C3A1L1

Today it means: Of, pertaining to, or caused by meningococci. Full definition →

Proto-Indo-European *h₂élisder.? ← English meningococcus
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The story

  1. Englishmeningococcus
  2. Proto-Indo-European*h₂el-
  3. Proto-Indo-European*h₂élisder.?
  4. English todaymeningococcal

From meningococcus + -al.

Etymology from Wiktionary, CC BY-SA 4.0.