The Collaborative International Dictionary
Xylidic
Xylidic \Xy*lid"ic\, a. (Chem.) Pertaining to, or designating, either one of two distinct acids which are derived from xylic acid and related compounds, and are metameric with uvitic acid.
Wiktionary
xylidic
a. (context chemistry dated English) Of or pertaining to either of two acids derived from xylic acid and related compounds, metameric with uvitic acid.