coun·​ter·​selection | \ "+ \

Definition of counterselection

: selection opposed in its effects to natural selection: such as
a : preservation of less well-adapted individuals : dysgenic selection
b : selection in plant or animal breeding against a quality undesirable from the point of view of the breeder though likely to be retained in a state of nature counterselection against low milk production in cattle

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 counterselection

counter- + selection

Keep scrolling for more

Learn More about counterselection

Statistics for counterselection

Cite this Entry

“Counterselection.” Dictionary, Merriam-Webster, Accessed 26 Jan. 2021.

Comments on counterselection

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


Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

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