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Meaning of HELIANTHIN

 
Webster's 1913 Dictionary
 
 Definition: 
\He`li*an"thin\, n. [Prob. fr. L. helianthes, or NL.
helianthus, sunflower, in allusion to its color.] (Chem.)
An artificial, orange dyestuff, analogous to tropaolin, and
like it used as an indicator in alkalimetry; -- called also
{methyl orange}.

 

 

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