Polydeoxy- refers to a long chain of deoxyribonucleotides, which form a part of the structure of DNA. There are several synonyms for this term that are commonly used in scientific literature, including polydA, polydC, polydG, polydT. These terms refer to the specific type of deoxyribonucleotide that makes up the DNA molecule. PolydA refers to a chain of adenine nucleotides, polydC to cytosine nucleotides, polydG to guanine nucleotides, and polydT to thymine nucleotides. These synonyms are used interchangeably and are essential for understanding the structure and function of DNA in biological systems.