The Collaborative International Dictionary
Naphthoic
Naphthoic \Naph*tho"ic\, a. (Chem.) Pertaining to, derived from, or related to, naphthalene; -- used to designate any one of a series of carboxyl derivatives, called naphthoic acids of the general formula C10H7.COOH, such as 1-naphthoic acid.
Wiktionary
naphthoic
a. Of or pertaining to naphthoic acid or its derivatives