Macrocycle is a term that is commonly used in the field of biology and chemistry, referring to a cyclic structure comprising of at least 12 atoms. However, there are many synonyms for the word 'macrocycle' that may be used interchangeably. Examples of synonyms of macrocycle include cyclic peptide, ring polymer, cyclic compound, round-chain molecule, and many others. Each of these synonyms is used in a specific context, but they all refer to the same type of compound. Cyclic peptides, for instance, include both short and long peptides that are arranged in a ring conformation, while ring polymers refer to long-chain molecules that are arranged in a circular form. Understanding these synonyms can assist scientists in communicating their findings more effectively.