Nucleotide Sequence
codon Audio
co·don [ koh-don ]
Subclass of:
Gene Components; RNA, Messenger; Genetic Code
Definitions related to codon (nucleotide sequence):
  • (codon) A set of three nucleotides in a protein coding sequence that specifies individual amino acids or a termination signal (CODON, TERMINATOR). Most codons are universal, but some organisms do not produce the transfer RNAs (RNA, TRANSFER) complementary to all codons. These codons are referred to as unassigned codons (CODONS, NONSENSE).
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • (codon) A specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • (codon) In DNA or RNA, a sequence of 3 consecutive nucleotides that codes for a specific amino acid or signals the termination of gene translation (stop or termination codon).
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.