/euh liz"euhr in/ , n. Chem.
a solid appearing reddish-orange as crystals and brownish-yellow as powder, C 14 H 8 O 4 , one of the earliest known dyes, formerly obtained in its natural state from madder and now derived from anthraquinone: used chiefly in the synthesis of other dyes.
Also, alizarine /euh liz"euhr in, -euh reen'/ .
[ 1825-35; alizarine, equiv. to alizar ( i ) ( al the + 'asarah juice) + -ine -INE 1 ]