资料来源 : Webster's Revised Unabridged Dictionary (1913)

Naphthalic \Naph*tha"lic\, a. (Chem.)
   (a) Pertaining to, derived from, or related to, naphthalene;
       -- used specifically to denote any one of a series of
       acids derived from naphthalene, and called naphthalene
       acids.
   (b) Formerly, designating an acid probably identical with
       phthalic acid.