noun di·isobutylene \(¦)dī+\

Definition of diisobutylene

  1. :  a liquid mixture containing the two octylenes 2,4,4-trimethyl-1-pentene and 2,4,4-trimethyl-2-pentene obtained from isobutylene by reaction with acid catalysts and used as an intermediate (as for plastics)

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Origin and Etymology of diisobutylene

di- + isobutylene

Seen and Heard

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to cast off or become cast off

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