noun. A sequence of three adjacent nucleotides in transfer RNA that binds to a corresponding codon in messenger RNA and designates a specific amino acid during protein synthesis.

noun. A sequence of three nucleotides in transfer RNA that binds to the complementary triplet (codon) in messenger RNA to specify an amino acid during protein synthesis

"It also contains a three base region called the anticodon that can base pair to the corresponding three base codon region on mRNA."