naphthalene naphthalate • naphthaleneacetic · · · Info · Definitions · Characters · · naphthalene · · Text Latin · · Script 11 · · Length Definitions · · · (noun) a white crystalline strong-smelling hydrocarbon made from coal tar or petroleum and used in organic synthesis and as a fumigant in mothballs. · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C n latin small letter n U+006E p latin small letter p U+0070 t latin small letter t U+0074