open chain

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n.
An arrangement of atoms that does not form a ring, as in silicon compounds and various carbon compounds, such as aliphatic hydrocarbons.


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open-chain

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IN BRIEF: adj. - Atoms represented in a structural formula not joined to form a ring

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(in chemistry)
  1. a chain of atoms in a molecule that is not formed into a ring, i.e. one that has two (or more) free ends.
  2. open-chainan alternative term for acyclic.

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cyclization (organic chemistry)
acyclic compound (organic chemistry)
alyphite (geology)