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pyrrolidine

American  
[pi-roh-li-deen, -din, -rol-i-] / pɪˈroʊ lɪˌdin, -dɪn, -ˈrɒl ɪ- /

noun

Chemistry.

  1. a colorless, water-soluble, unpleasant smelling, poisonous liquid, C 4 H 9 N, from which proline and certain alkaloids are derived, prepared by reducing pyrrole: used chiefly in organic synthesis.

pyrrolidine British  
/ pɪˈrɒlɪˌdiːn /

noun

  1. an almost colourless liquid occurring in tobacco leaves and made commercially by hydrogenating pyrrole. It is a strongly alkaline heterocyclic base with molecules that contain a ring of four carbon atoms and one nitrogen atom. Formula: C 4 H 9 N

"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 pyrrolidine

First recorded in 1880–85; pyrrole + -id 3 + -ine 2

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.