Quinate is a term that refers to a chemical compound that contains five carbon atoms in its structure. Some synonyms for this word include pentose, quintuple, and quintessential. Pentose is a term used in biochemistry and refers to a type of monosaccharide that has five carbon atoms. Quintuple is a term used to describe something that is made up of five parts or is five times as much. Finally, quintessential is used to refer to something that is the perfect embodiment of a particular quality or characteristic. All these words are used to describe something that is related to the number five, in one way or another.