Etymology

bivalve

B3I1V4A1L1V4E1

Today it means: Any mollusc belonging to the taxonomic class Bivalvia, characterized by a shell consisting of two hinged sections, such as a scallop, clam, mussel or oyster. Full definition →

English valve ← Latin bi- ← Proto-Italic *dwi-
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The story

  1. Proto-Indo-European*dwóh₁
  2. Proto-Indo-European*dwi-
  3. Proto-Italic*dwi-
  4. Latinbi-
  5. Englishbi-
  6. Englishvalve
  7. English todaybivalve

From bi- (“two”) + valve.

Etymology from Wiktionary, CC BY-SA 4.0.