Small Nucleolar RNAs (snoRNA) are a class of RNA molecules that are involved in the processing and modification of other RNA molecules. These molecules have several different synonyms that are used in scientific literature, including snoRNA, small nucleolar RNA, and small nucleolar ribonucleic acid. Additionally, these molecules may be referred to as snoRNA genes, as they are transcribed from DNA and are subject to genetic variation and regulation. The discovery of snoRNAs has revolutionized the field of RNA research, providing new insights into the complex and intricate molecular mechanisms that govern cell function and gene expression.