Polyuridylic acids, often referred to as poly(U), are a class of nucleic acids consisting of a polymer chain made up of uridine monomers. These compounds play a significant role in molecular genetics research as they are commonly used in laboratory settings for various purposes. Synonyms for polyuridylic acids include "poly(U) nucleotides" and "polyuridylic acid homopolymers". These synonyms are often used interchangeably to denote the same biopolymer, emphasizing the repeating uracil component of the compound. With their vital role in scientific experimentation and their relevance in understanding nucleic acid function, these synonyms are frequently used in scientific literature and discussions.