naphthalic Meaning, Definition & Usage

Naph*tha"lic adjective
Definitions
  1. (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.

Webster 1913