phenyl·urethan \| ̷ ̷ ̷ ̷+\noun orphenyl·urethane\| ̷ ̷ ̷ ̷+\ Etymology: International Scientific Vocabulary phenyl + urethan 1.: an aromatic crystalline ester C6H5NHCOOC2H5 made usually by addition of ethyl alcohol to phenyl isocyanate 2.: any ester of carbanilic acid