Etymology

metallacyclobutane

Today it means: A derivative of cyclobutane (or of a derivative) in which a methylene group has been replaced by a metal atom Full definition →

English cyclobutane ← Ancient Greek μέτᾰλλον (métăllon)
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The story

  1. Ancient Greekμέτᾰλλον (métăllon)
  2. Englishmetallo-
  3. Englishcyclobutane
  4. English todaymetallacyclobutane

From metallo- + cyclobutane.

Etymology from Wiktionary, CC BY-SA 4.0.