Pro-RNA or pro-ribonucleic acid refers to a pre-messenger RNA molecule that has not yet undergone post-transcriptional processing. Some synonyms for the term "pro-RNA" include immature RNA, pre-RNA, primary RNA, and nascent RNA. These terms all refer to the same type of RNA strand that has not yet been processed to form a fully functional molecule. The term pre-mRNA can also be used to describe pro-RNA. When pro-RNA undergoes processing, it will eventually yield a mature messenger RNA molecule that can be translated into protein. Understanding the different terms used to describe RNA molecules is important in biological research, especially in fields such as genetics and molecular biology.