variants: or Neo-Lamarckism

Definition of neo-Lamarckism 

: a modern theory of evolution based on Lamarckism and retaining the fundamental concept that acquired characters are inherited: such as

a : the theory that evolution results from the action of natural selection upon acquired characters

b : the theory that evolutionary change is the direct product of the interaction of organism and environment — compare neo-darwinism

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for neo-Lamarckism

ne- + lamarckism

Keep scrolling for more

Learn More about neo-Lamarckism

Share neo-Lamarckism

Statistics for neo-Lamarckism

Look-up Popularity

Comments on neo-Lamarckism

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


having a pattern of small flowers

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

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


Love words? Need even more definitions?

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