• synonyms


noun Chemistry.
  1. a crystalline, water-insoluble, solid, unsaturated compound, C14H10, used chiefly in organic synthesis.
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Origin of tolan

variant of tolane. See toluene, -ane
Also called diphenylacetylene.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tolan

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Historical Examples

  • One daughter, Mrs. Tolan, met a tragic death at the hands of an insane husband, in 1881.

    Fifty Years In The Northwest

    William Henry Carman Folsom

British Dictionary definitions for tolan


tolane (ˈtəʊleɪn)

  1. a white crystalline derivative of acetylene; diphenylacetylene; diphenylethyne. Formula: C 6 H 5 C:CC 6 H 5
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Word Origin

C19: from tol (uene) + -an (see -ane)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012