释义 |
alizarine yellow noun Usage: often capitalized A&Y : any of various mordant dyes not related chemically to alizarin but applicable by similar methods: as a. : a monoazo dye made by coupling diazotized m-nitroaniline with salicylic acid — called also Alizarine Yellow 2G; see dye table I (under Mordant Yellow 1) b. : a monoazo dye made by coupling p-nitroaniline with salicylic acid and used chiefly as an acid-base indicator — called also Alizarine Yellow R; see dye table I (under Mordant Orange 1) c. : gallacetophenone — called also Alizarine Yellow C |