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diborane

[dahy-bawr-eyn, -bohr-]
noun Chemistry.
  1. a colorless gas with an unpleasant odor, B2H6, used in the synthesis of organic boron compounds as a dope to introduce boron and as a polymerization catalyst for ethylene.
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Origin of diborane

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018