prim·​u·​line | \ ˈprimyəˌlēn, -lə̇n\
plural -s

Definition of primuline

: a fugitive yellow dye made by heating para-toluidine and sulfur together and sulfonating the product that can be diazotized on the fiber and coupled with a phenol or amine to yield various developed dyes (as red colors of good fastness to washing but not to light)

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History and Etymology for primuline

International Scientific Vocabulary primul- (from New Latin Primula) + -ine

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