Definitions
from The Century Dictionary.
- noun A resinous coloring matter (C7H6O2), isomeric with benzoic acid, existing in madder, and formed from rubian under the influence of acids or of a soluble ferment found in madder.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) One of the red dye products extracted from madder root, and probably identical with ruberythrinic acid.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry One of the
red dye products extracted frommadder root, probably identical withruberythrinic acid .
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