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Lamarckian

American  
[luh-mahr-kee-uhn] / ləˈmɑr ki ən /

adjective

  1. of or relating to Jean de Lamarck or his theory of organic evolution.

noun

  1. a person who holds this theory.

Lamarckian British  
/ lɑːˈmɑːkɪən /

adjective

  1. of or relating to Lamarck

"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

noun

  1. a supporter of Lamarckism

"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 Lamarckian

First recorded in 1840–50; Lamarck + -ian

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.