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cycloaddition

[sahy-kloh-uh-dish-uh n, sik-loh-] /ˌsaɪ kloʊ əˈdɪʃ ən, ˌsɪk loʊ-/
noun, Chemistry
1.
the formation of a cyclic compound by the addition reaction of unsaturated molecules.
Origin
1960-1965
1960-65; cyclo- + addition
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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