The term "conjugated system" refers to a molecule with a series of adjacent, alternating double bonds which facilitate delocalization of electrons, resulting in increased stability and unique chemical properties. Synonyms for conjugated system include "conjugated structure," "conjugated moiety," "conjugated backbone," and "conjugated chromophore." Chemists may also use terms such as "extended pi-system" or "aromatic system" to describe molecules with conjugated bonds. These systems can be found in a wide range of organic molecules, including pigments, dyes, and semiconductors, and are important for understanding the electronic and optical properties of these substances.