Lamarckism

play
noun La·marck·ism \ lə-ˈmär-ˌki-zəm \

Definition of Lamarckism

:a theory of organic evolution asserting that environmental changes cause structural changes in animals and plants that are transmitted to offspring

Lamarckian

play \lə-ˈmär-kē-ən\ adjective

Origin and Etymology of lamarckism

J.-B. de Monet de Lamarck


Medical Dictionary

Lamarckism

play
noun La·marck·ism \ lə-ˈmär-ˌkiz-əm \

medical Definition of Lamarckism

:a theory of organic evolution asserting that environmental changes cause structural changes in animals and plants that are transmitted to offspring

Learn More about lamarckism


Seen and Heard

What made you want to look up Lamarckism? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

alert quickness of mind or body

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!