Naphthalene n. : A white crystalline aromatic hydrocarbon, C10H8, analogous to benzene, and obtained by the distillation of certain bituminous materials, such as the heavy oil of coal tar. It is the type and basis of a large number of derivatives among organic compounds. Formerly called also naphthaline.

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Taxonomy
naphthalene sulfonate, coal tar, alpha, beta, Humans, benzene rings, rings, positions, substitution, chemicals, Exposure, fumigant, dispersants, free encyclopedia, C 10, resonance structures, carcinogenic activity, volatile.

Defination from the web:
Naphthalene, also known as naphthalin, or antimite and not to be confused with naphtha, is a crystalline, aromatic, white, solid hydrocarbon with ... For many electrophilic aromatic substitution reactions, naphthalene reacts under milder conditions than does benzene. ...