adj. of, relating to, or derived from naphthalene or phthalic acid
the GNU version of the Collaborative International Dictionary of English
adj. Pertaining to, or designating, a dibasic acid obtained by the oxidation of naphthalene and allied substances.
The Century Dictionary and Cyclopedia
Derived from naphthalene.
Word Usage
"Pour in equal measures of each solution (fig. 2) — and watch with glee as it lights up (fig. 3). The hydrogen peroxide solution oxidizes the luminol, producing 3-amino phthalic acid."