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tolan

American  
[toh-lan] / ˈtoʊ læn /

noun

Chemistry.

  1. a crystalline, water-insoluble, solid, unsaturated compound, C 14 H 10 , used chiefly in organic synthesis.

tolan British  
/ ˈtəʊleɪn, ˈtəʊlæn /

noun

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

"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

Etymology

Origin of tolan

Variant of tolane. See toluene, -ane

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.