closed chain

Noun
  1. (chemistry) a chain of atoms in a molecule that forms a closed loop (synset 109269789)
    referred to in: chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
    is a type of: chain, chemical chain - (chemistry) a series of linked atoms (generally in an organic molecule)
    subtypes: heterocycle, heterocyclic ring - a ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon
    same as: ring

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