| ̷ ̷ ̷ ̷ at nitro- + noun
Etymology: International Scientific Vocabulary nitr- + toluene
: a nitro derivative of toluene or a mixture of such derivatives: as
a. : the yellow liquid ortho mono derivative CH 3 C 6 H 4 NO 2 made by nitration of toluene and used chiefly as an intermediate for azo dyes
b. : the colorless crystalline solid para isomer obtained along with the ortho derivative and used similarly