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Definition of "four-membered" []

  • Of a chemical compound having a ring with four members (adjective)

WordNet. Princeton University. 2010.

Use "four-membered" in a sentence
  • "Others were equally sure it was a four-membered ring fused to a five-membered ring, known as a beta lactam."
  • "The double door frame projects pilaster-like, with a four-membered cornice above, from which rises an elliptical arch, with an elliptical cornice about a foot above."
  • "OXE has an unstable chemical structure (a four-membered ring containing three carbons and one oxygen) that makes it prone to being split open."