/zuy"li deen', -din, zil"i-/ , n.
1. any of six isomeric compounds that have the formula C 8 H 11 N, are derivatives of xylene, and resemble aniline: used in dye manufacture.
2. an oily liquid consisting of a mixture of certain of these compounds, used commercially in making dyes.
[ 1840-50; XYL(ENE) + -ID 3 + -INE 2 ]