Lamarckism

[ luh-mahr-kiz-uh m ]
/ ləˈmɑr kɪz əm /

noun

the Lamarckian theory that characteristics acquired by habit, use, or disuse may be passed on to future generations through inheritance.

Origin of Lamarckism

First recorded in 1880–85; Lamarck + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for lamarckism

Lamarckism
/ (lɑːˈmɑːkɪzəm) /

noun

the theory of organic evolution proposed by Lamarck, based on the principle that characteristics of an organism modified during its lifetime are inheritableSee also acquired characteristic, Neo-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