App definition, an application, typically a small, specialized program downloaded onto mobile devices: the best GPS apps for your iPhone. See more.
Anticodon. An anticodon is a tri nucleotide sequence complement ary to that of a corresponding codon in a messenger RNA (mRNA) sequence. An anticodon is found at one end of a transfer RNA (tRNA) molecule. anticodon the complement ary codon present on a tRNA molecule.
Also found in: Dictionary, Encyclopedia. anticodon. a triplet of nucleotides in transfer RNA that is complementary to the codon in messenger RNA that specifies the amino acid. Anticodon. The three nucleotides (shaded) on a transfer RNA bind to a complementary messenger RNA codon. From Dorland's, 2000.