stop codon

noun
\ ˈstäp- How to pronounce stop codon (audio) \

Medical Definition of stop codon

: a genetic codon in messenger RNA that signals the termination of protein synthesis during translation Each codon stands for one of the 20 amino acids that make up proteins or for one of three stop codons that signal the end of a protein chain.— Tina Hesman, Science News, 3 June 2000

called also termination codon

— compare start codon

Learn More About stop codon

Dictionary Entries Near stop codon

stool

stop codon

stopping

See More Nearby Entries 

Cite this Entry

“Stop codon.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/stop%20codon. Accessed 21 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!