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[pi-roh-li-deen, -din, -rol-i-] /pɪˈroʊ lɪˌdin, -dɪn, -ˈrɒl ɪ-/
noun, Chemistry.
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.
Origin of pyrrolidine
First recorded in 1880-85; pyrrole + -id3 + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for pyrrolidine


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: C4H9N
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
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pyrrolidine in Medicine

pyrrolidine pyr·rol·i·dine (pĭ-rŏl'ĭ-dēn')
A nearly colorless liquid pyrrole derivative of pyrrole having an ammonialike odor; it is the basis of proline and hydroxyproline.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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