Tetrasaccharide is a term that refers to a carbohydrate molecule containing four sugar units. Some synonyms for tetrasaccharide include quadruplex saccharides, quadriose saccharides, tetrarose saccharides, and four-sugar carbohydrates. Depending on the arrangement of the sugar units in the molecule, tetrasaccharides may also be referred to as diastereomers or constitutional isomers. These types of molecules are commonly found in complex carbohydrates such as glycans and are important in biological processes such as cell surface recognition and signaling. Understanding the different synonyms for tetrasaccharide can help individuals in the fields of chemistry, biochemistry, and biotechnology to more accurately and precisely communicate about the structure of these important molecules.