The decoding of an mRNA message into a protein is known as translation.

Here's a breakdown of why:

* mRNA (messenger RNA): Carries the genetic code from DNA in the nucleus to the ribosomes in the cytoplasm.

* Ribosomes: Cellular machinery that reads the mRNA code and assembles amino acids into a protein chain.

* Translation: The process where the sequence of codons (three-nucleotide units) in mRNA is converted into a sequence of amino acids in a polypeptide chain.

Let me know if you'd like more details about the process of translation!