Definition of codon in English:

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Pronunciation: /ˈkōdän/


A sequence of three nucleotides that together form a unit of genetic code in a DNA or RNA molecule.
Example sentences
  • Biochemistry may explain why most of the exceptions to the genetic code involve stop codons.
  • In effect, the DNA blueprint is a succession of code words, each consisting of a set of three nucleotides, known as codons, in the gene.
  • Due to the redundant nature of codons, the genetic code shows a significant level of neutrality.


1960s: from code + -on.

For editors and proofreaders

Syllabification: co·don

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